KS3 Science-Chemistry Quiz on "Reactions of metals, metal compounds, metal reactivity, environmental chemistry and uses of chemistry" (based on QCA 9E to 9H)

[9e-1] Complete the word equation: metal + acid ==> ?
1. salt + hydrogen
2. salt + water
3. salt + water + carbon dioxide
4. salt + carbon dioxide
[9e-2] Complete the word equation: metal oxide + acid ==> ?
1. salt + hydrogen
2. salt + water
3. salt + water + carbon dioxide
4. salt + carbon dioxide
[9e-3] Complete the word equation: metal carbonate + acid ==> ?
1. salt + hydrogen
2. salt + water
3. salt + water + carbon dioxide
4. salt + carbon dioxide
[9e-4] Complete the word equation: metal hydroxide + acid ==> ?
1. salt + hydrogen
2. salt + water + carbon dioxide
3. salt + carbon dioxide
4. salt + water
The preparation of copper sulphate.
Which word applies to stages 1 and 2? [9e-5]
1. dissolving
2. filtration
3. evaporation
4. crystallisation
The preparation of copper sulphate.
Which word applies to stage 3? [9e-6]
1. dissolving
2. filtration
3. evaporation
4. crystallisation
The preparation of copper sulphate.
Which word applies to go from stage 3 to stage 4? [9e-7]
1. dissolving
2. filtration
3. evaporation
4. crystallisation
The preparation of copper sulphate.
Which word applies to the formation of the solid in stage 4? [9e-8]
1. dissolving
2. filtration
3. evaporation
4. crystallisation
The preparation of copper sulphate.
Why is the mixture heated in stage 2? [9e-9]
1. to speed up the solid dissolving
2. the starting solid only dissolves in hot acid
3. to increase the rate of evaporation
4. you can only get crystallisation from hot solutions
The preparation of copper sulphate.
Which is a suitable solid and solution to use for this preparation? [9e-10]
1. copper chloride and sodium sulphate solution
2. copper oxide and sulphuric acid
3. copper nitrate and sodium sulphate solution
4. copper carbonate and nitric acid
The preparation of copper sulphate.
Which is a suitable solid and solution to use for this preparation? [9e-11]
1. copper oxide and sodium sulphate solution
2. copper chloride and sulphuric acid
3. copper carbonate and sulphuric acid
4. copper nitrate and sodium sulphate solution
The preparation of copper nitrate.
Which is a suitable solid and solution to use for this preparation? [9e-12]
1. copper chloride and sodium nitrate solution
2. copper oxide and sodium nitrate solution
3. copper carbonate and sulphuric acid
4. copper oxide and nitric acid
Which four numbers a, b, c and d are required to balance the equation? [9e-13]
a Zn_(s) + b HCl_(aq) ==> c ZnCl_2(aq) + d H_2(g)
1. 1 2 1 1
2. 2 2 2 1
3. 2 1 1 2
4. 1 1 2 2
Which four numbers a, b, c and d are required to balance the equation? [9e-14]
a Fe_(s) + b H₂SO_4(aq) ==> c FeSO_4(aq) + d H_2(g)
1. 1 1 1 2
2. 1 1 1 1
3. 2 2 2 1
4. 2 1 2 2
[9e-15] Complete the word equation: iron + sulphuric acid ==> ?
1. iron sulphate + water
2. iron sulphite
3. iron sulphate + hydrogen
4. iron sulphate + carbon dioxide
[9e-16] Complete the word equation: copper oxide + sulphuric acid ==> ?
1. copper sulphate
2. copper sulphate + hydrogen
3. copper sulphite + oxygen
4. copper sulphate + water
Which five numbers a, b, c, d and e are required to balance the equation? [9e-17]
a CaCO_3(s) + b HCl_(aq) ==> c CaCl_2(aq) + d H₂O_(l) + e CO_2(g)
1. 1 2 1 1 1
2. 2 2 1 2 1
3. 1 1 1 1 1
4. 2 1 2 2 2
Which five numbers a, b, c, d and e are required to balance the equation? [9e-18]
a Na₂CO_3(s) + b HCl_(aq) ==> c NaCl_(aq) + d H₂O_(l) + e CO_2(g)
1. 1 4 4 2 2
2. 1 2 2 1 1
3. 2 2 4 2 2
4. 2 2 2 1 1
Which four numbers a, b, c and d are required to balance the equation? [9e-19]
a NaOH_(aq) + b HCl_(aq) ==> c NaCl_(aq) + d H₂O_(l)
1. 2 1 1 2
2. 1 2 2 1
3. 1 1 1 1
4. 1 2 2 1
Which four numbers a, b, c and d are required to balance the equation? [9e-20]
a Ca(OH)_2(aq) + b HCl_(aq) ==> c CaCl_2(aq) + d H₂O_(l)
1. 1 2 1 1
2. 2 2 2 1
3. 2 1 1 2
4. 1 2 1 2
Which four numbers a, b, c and d are required to balance the equation?[9e-21]
a Al(OH)_3(s) + b HCl_(aq) ==> c AlCl_3(aq) + d H₂O_(l)
1. 2 6 2 3
2. 1 6 2 6
3. 1 3 1 3
4. 2 3 2 3
[9e-22] Complete the word equation: magnesium carbonate + nitric acid ==> ?
1. magnesium nitrate + carbon dioxide
2. magnesium nitrite + hydrogen
3. magnesium nitrite + water
4. magnesium nitrate + water + carbon dioxide
Which four numbers a, b, c and d are required to balance the equation? [9e-23]
a MgO_(s) + b HCl_(aq) ==> c MgCl_2(aq) + d H₂O_(l)
1. 1 2 1 1
2. 1 1 1 1
3. 2 2 1 2
4. 1 4 1 2
Which four numbers a, b, c and d are required to balance the equation? [9e-24]
a Mg(OH)_2(s) + b H₂SO_4(aq) ==> c MgSO_4(aq) + d H₂O_(l)
1. 1 2 1 1
2. 1 1 1 2
3. 2 2 1 2
4. 1 4 1 2
9e-25] Complete the word equation: zinc + hydrochloric acid ==> ?
1. zinc chlorate + chlorine
2. zinc chloride + water
3. zinc chloride + hydrogen
4. zinc chlorate + carbon dioxide
[9e-26] Which four numbers a, b, c and d are required to balance the equation?
a KOH_(aq) + b H₂SO_4(aq) ==> c K₂SO_4(aq) + d H₂O_(l)
1. 1 2 1 1
2. 1 1 1 1
3. 2 2 1 2
4. 2 1 1 2
[9e-27] Which four numbers a, b, c and d are required to balance the equation?
a CuO_(s) + b H₂SO_4(aq) ==> c CuSO_4(aq) + d H₂O_(l)
1. 1 1 1 1
2. 1 2 1 1
3. 2 2 1 2
4. 1 4 1 2
[9e-28] Which four numbers a, b, c and d are required to balance the equation?
a CuO_(s) + b HNO_3(aq) ==> c Cu(NO₃)_2(aq) + d H₂O_(l)
1. 1 1 1 1
2. 1 2 1 1
3. 2 2 1 2
4. 1 4 1 2
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-29]
1. solid non-metallic elements are dull looking
2. metallic elements are poor conductors of heat
3. non-metallic elements are good conductors of electricity
4. metallic elements have low melting points
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-30]
1. solid non-metallic elements are shiny looking
2. metallic elements are good conductors of heat
3. non-metallic elements are good conductors of electricity
4. metallic elements have low melting points
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-31]
1. solid non-metallic elements are shiny looking
2. metallic elements are poor conductors of heat
3. non-metallic elements are poor conductors of electricity
4. metallic elements have low melting points
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-32]
1. solid non-metallic elements are shiny looking
2. metallic elements are poor conductors of heat
3. non-metallic elements are good conductors of electricity
4. metallic elements have high melting points
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-33]
1. non-metallic have low boiling points
2. metallic elements have a low density
3. solid non-metallic elements are strong
4. metallic elements are not easily bent into shape
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-34]
1. non-metallic have high boiling points
2. metallic elements have a high density
3. solid non-metallic elements are strong
4. metallic elements are not easily bent into shape
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-35]
1. non-metallic have high boiling points
2. metallic elements have a low density
3. solid non-metallic elements are weak or brittle
4. metallic elements are not easily bent into shape
Which of the following statements is generally TRUE about metallic and non-metallic elements of the Periodic Table? [9e-36]
1. non-metallic have high boiling points
2. metallic elements have a low density
3. solid non-metallic elements are strong
4. metallic elements are easily bent into shape
Which of the following elements is a non-metal but quite a good conductor of heat and electricity? [9e-37]
1. carbon
2. copper
3. iron
4. sulphur
Which of the following elements is a good conductor used in electrical wiring? [9e-38]
1. carbon
2. copper
3. iron
4. sulphur
Which of the following elements is a strong metal used to make steel for cans? [9e-39]
1. magnesium
2. copper
3. iron
4. gold
Which of the following elements has been used for thousands of years for jewellery because it doesn't tarnish easily? [9e-40]
1. sulphur
2. tin
3. iron
4. gold
Which element is used to 'galvanise' iron and steel to prevent rusting? [9e-41]
1. zinc
2. lead
3. silver
4. aluminium
Which element is very malleable and used in sealing roofs around chimneys or dormer windows? [9e-42]
1. zinc
2. lead
3. silver
4. aluminium
Which element is used for ornaments because it is malleable and does not corrode easily? [9e-43]
1. zinc
2. lead
3. silver
4. aluminium
Which element is used for window frames and other situations exposed to the weather, because it has good anti-corrosion properties? [9e-44]
1. zinc
2. copper
3. silver
4. aluminium
A solid W is reacted with acid. A colourless gas X is given off which gives a 'squeaky pop' with a lighted spill. The solid W is most likely to be a? [9e-45]
1. metal
2. metal oxide
3. metal carbonate
4. metal hydroxide
A solid W is reacted with acid. A colourless gas X is given off which gives a 'squeaky pop' with a lighted spill. The gas X is most likely to be? [9e-46]
1. oxygen
2. hydrogen
3. nitrogen
4. carbon dioxide
A solid Y is reacted with acid. A colourless gas Z is given off which gives a white milky precipitate when bubbled into limewater. The solid Y is most likely to be a? [9e-47]
1. metal
2. metal oxide
3. metal carbonate
4. metal hydroxide
A solid Y is reacted with acid. A colourless gas Z is given off which gives a white milky precipitate when bubbled into limewater. The gas Z is most likely to be? [9e-48]
1. oxygen
2. hydrogen
3. nitrogen
4. carbon dioxide
[9e-49] Complete the word equation: calcium hydroxide + hydrochloric acid ==> ?
1. calcium chloride + water
2. calcium chlorate + hydrogen
3. calcium chloride + water + carbon dioxide
4. calcium chlorate + carbon dioxide
[9e-50] Complete the word equation: zinc carbonate + hydrochloric acid ==> ?
1. zinc chloride + water
2. zinc chloride + water + carbon dioxide
3. zinc chloride + carbon dioxide
4. zinc chloride + hydrogen
[9e-51] Complete the word equation: copper carbonate + sulphuric acid ==> ?
1. copper sulphate + water
2. copper sulphate + carbon dioxide
3. copper sulphate + water + carbon dioxide
4. copper sulphate + hydrogen
[9e-52] Complete the word equation: magnesium + nitric acid ==> ?
1. magnesium nitrite + water
2. magnesium nitrate + carbon dioxide
3. magnesium nitrite + water + oxygen
4. magnesium nitrate + hydrogen
Magnesium rapidly dissolves in dilute sulphuric acid to give a clear colourless solution. Calcium only reacts slowly with dilute sulphuric acid to give a cloudy solution. Which of the statements explains these observations? [9e-53]
1. magnesium sulphate is soluble in water but calcium sulphate is only slightly soluble
2. calcium is not a reactive a metal as magnesium
3. calcium cannot form a sulphate salt but magnesium can
4. magnesium sulphate reacts with water but calcium sulphate does not
Which is used in fireworks to give a bright white effect? [9e-54]
1. sodium
2. magnesium
3. copper
4. calcium
Magnesium oxide and magnesium carbonate are similar white powders which are slightly soluble in water. Which of the following provides a simple observation to clearly distinguish them? [9e-55]
1. mix with universal indicator solution
2. heat in a bunsen flame
3. add dilute acid
4. examine under a microscope
Metal salts can be prepared from a water insoluble metal oxide, hydroxide or carbonate in dilute acid. Which of the following best explains why excess solid is mixed with the acid? [9e-56]
1. to speed up the reaction
2. its easier to filter the acid than the solid
3. to seed good crystals in the last stage
4. so that all the acid is neutralised and the excess solid can be filtered off
Copper sulphate can be prepared by reacting dilute sulphuric acid with copper oxide powder. Which piece of evidence best supports the idea that a chemical reaction has taken place? [9e-57]
1. a blue solution is formed
2. heating speeds up the dissolving
3. the copper oxide seems to disappear
4. no bubbles of gas are formed
Which two chemicals can be used to make copper nitrate? [9e-58]
1. copper carbonate and sulphuric acid
2. copper hydroxide and nitric acid
3. copper oxide and hydrochloric acid
4. copper and nitrogen dioxide
Which of the following salts is used in cooking and flavouring food? [9e-59]
1. potassium sulphate
2. lead ethanoate
3. sodium chloride
4. ammonium nitrate
Which of the following chemicals is a salt used in fertilisers to provide plants with nitrogen? [9e-60]
1. potassium hydroxide
2. lead ethanoate
3. sodium chloride
4. ammonium nitrate
Which of the following is the test for hydrogen? [9e-6]
1. gives a squeaky pop with a lit splint
2. turns limewater 'milky' (white precipitate!)
3. relights a glowing splint
4. turns blue litmus red and then leaches it
Which of the following is the test for carbon dioxide? [9e-62]
1. gives a squeaky pop with a lit splint
2. turns limewater 'milky' (white precipitate!)
3. relights a glowing splint
4. turns blue litmus red and then leaches it
Which two chemicals can be used to make magnesium nitrate? [9e-63]
1. magnesium carbonate and sulphuric acid
2. magnesium hydroxide and hydrochloric acid
3. magnesium oxide and nitric acid
4. magnesium and nitrogen dioxide
Which two chemicals can be used to make magnesium sulphate? [9e-64]
1. magnesium carbonate and nitric acid
2. magnesium hydroxide and hydrochloric acid
3. magnesium oxide and sulphur dioxide
4. magnesium hydroxide and sulphuric acid
Which two chemicals can be used to make magnesium chloride? [9e-65]
1. magnesium carbonate and hydrochloric acid
2. magnesium oxide and chlorine
3. magnesium hydroxide and sulphuric acid
4. magnesium oxide and nitric acid
Which two chemicals can be used to make magnesium sulphate? [9e-66]
1. magnesium oxide and hydrochloric acid
2. magnesium carbonate and sulphuric acid
3. magnesium hydroxide and nitric acid
4. magnesium oxide and sulphur dioxide
What could be missing from the equation below? [9e-67]

zinc + ___(1)___ ==> zinc chloride + ___(2)___
1. (1) nitric acid and (2) hydrogen
2. (1) chlorine and (2) water
3. (1) hydrochloric acid and (2) hydrogen
4. (1) sulphuric acid and (2) water
What could be missing from the equation below? [9e-68]

zinc oxide + ___(1)___ ==> zinc sulphate + ___(2)___
1. (1) nitric acid and (2) hydrogen
2. (1) chlorine and (2) water
3. (1) hydrochloric acid and (2) hydrogen
4. (1) sulphuric acid and (2) water
What could be missing from the equation below? [9e-69]

__(1)__ + hydrochloric acid ==> ___(2)___ + hydrogen
1. (1) calcium and (2) calcium chloride
2. (1) calcium and (2) calcium sulphate
3. (1) calcium oxide and (2) calcium chloride
4. (1) calcium carbonate and (2) carbon dioxide
What could be missing from the equation below? [9e-70]

__(1)__ + hydrochloric acid ==> ___(2)___ + water
1. (1) calcium and (2) calcium nitrate
2. (1) calcium oxide and (2) calcium chloride
3. (1) calcium oxide and (2) calcium sulphate
4. (1) calcium carbonate and (2) carbon dioxide
What could be missing from the equation below? [9e-71]

__(1)__ + nitric acid ==> calcium nitrate + water + ___(2)___
1. (1) calcium and (2) hydrogen
2. (1) calcium oxide and (2) carbon dioxide
3. (1) calcium carbonate and (2) carbon dioxide
4. (1) calcium carbonate and (2) hydrogen
What could be missing from the equation below? [9e-72]

__(1)__ + hydrochloric acid ==> calcium chloride + water + ___(2)___
1. (1) calcium and (2) hydrogen
2. (1) calcium oxide and (2) carbon dioxide
3. (1) calcium carbonate and (2) hydrogen
4. (1) calcium carbonate and (2) carbon dioxide
Which metal is used for roofing and corrodes to a dull green solid? [9f-1]
1. copper
2. lead
3. iron
4. silver
Which metal is used for roofing and corrodes to form a dull white solid? [9f-2]
1. copper
2. lead
3. iron
4. silver
Which metal is used for structural purposes and corrodes to a dull orange-brown solid? [9f-3]
1. copper
2. lead
3. iron
4. silver
Which metal is used for tableware and old examples of it show patches of black corrosion? [9f-4]
1. copper
2. lead
3. iron
4. silver
Which metal shows little or no corrosion even after thousands of years? [9f-5]
1. gold
2. sodium
3. iron
4. copper
Which metal shows rapid corrosion even after a few days? [9f-6]
1. gold
2. sodium
3. iron
4. copper
What must iron be in contact with before it rusts? [9f-7]
1. only water
2. only oxygen
3. water and oxygen
4. air and soil
Freshly cut soft potassium rapidly tarnishes (dull effect). Which substance is the potassium most likely to be reacting with? [9f-8]
1. nitrogen
2. carbon dioxide
3. water
4. oxygen
[9f-9] Some metals react with cold water and fizzing is observed. Other less reactive metals react when heated in steam. Complete the word equation: metal + cold water ==> ?
1. metal hydroxide + hydrogen
2. metal oxide + hydrogen
3. metal salt + oxygen
4. metal salt
[9f-10] Some metals react with cold water and fizzing is observed. Other less reactive metals react when heated in steam. Complete the word equation: hot metal + steam ==> ?
1. metal hydroxide + hydrogen
2. metal oxide + hydrogen
3. metal salt + oxygen
4. metal salt
When added to cold water, which metal slowly produces just a few bubbles when it reacts? [9f-11]
1. sodium
2. calcium
3. magnesium
4. copper
When added to cold water, which metal shows no reaction with water after a few hours and can be used for roofing? [9f-12]
1. sodium
2. calcium
3. magnesium
4. copper
When added to cold water, which metal produces lots of bubbles rapidly? [9f-13]
1. sodium
2. zinc
3. magnesium
4. copper
[9f-14] Complete the word equation: calcium + water ==> ?
1. calcium carbonate + hydrogen
2. calcium hydroxide + hydrogen
3. calcium oxide + carbon dioxide
4. calcium oxide + oxygen
[9f-15] Complete the word equation: magnesium + sulphuric acid ===> ?
1. magnesium sulphite + carbon dioxide
2. magnesium chloride + hydrogen
3. magnesium sulphate + hydrogen
4. magnesium sulphate + water
[9f-16] Complete the word equation: calcium + hydrochloric acid ===> ?
1. calcium chlorate + oxygen
2. calcium chlorate + carbon dioxide
3. calcium chloride + water
4. calcium chloride + hydrogen
Which metal reacts VERY slowly with hydrochloric acid over a few days to form a pale blue-green solution? [9f-17]
1. copper
2. magnesium
3. sodium
4. iron
Which metal rapidly reacts with hydrochloric acid to form a colourless gas and a clear colourless solution? [9f-18]
1. copper
2. magnesium
3. sodium
4. iron
Which metal is likely to react explosively with hydrochloric acid? [9f-19]
1. copper
2. magnesium
3. sodium
4. iron
Which metal reacts moderately fast with hydrochloric acid to give a colourless gas and a pale green solution? [9f-20]
1. copper
2. magnesium
3. sodium
4. iron
Strips or strands of the following metals were heated strongly in a bunsen flame. Which burns with a bright white flame? [9f-21]
1. magnesium
2. copper
3. iron
4. zinc
Strips or strands of the folowing metals were heated strongly in a bunsen flame. Which gives blue or green colours to the flame and becomes coated in a black solid? [9f-22]
1. magnesium
2. copper
3. iron
4. zinc
Strips or strands of the folowing metals were heated strongly in a bunsen flame. Which gives an orange flame, sparks and forms a dark grey solid? [9f-23]
1. magnesium
2. copper
3. iron
4. zinc
Strips or strands of the folowing metals were heated strongly in a bunsen flame. Which melts, glows red and forms a white solid (pale yellow hot)? [9f-24]
1. magnesium
2. copper
3. iron
4. zinc
Why is tin used to coat steel cans? [9f-25]
1. its an unreactive metal and isn't readily attacked by acidic food juices
2. it alloys with iron to make a stronger can
3. it increases the shelf life of the food
4. it stops poisonous iron dissolving in the food liquids
[9f-26] Complete the word equation: metal + oxygen ==> ?
1. metal hydroxide
2. metal oxide
3. metal oxide + hydrogen
4. metal hydroxide + hydrogen
Which is the formula of magnesium oxide? [9f-27]
1. MgSO₄
2. MgCl₂
3. MgO
4. Mg(OH)₂
Which is the formula of magnesium hydroxide? [9f-28]
1. MgSO₄
2. MgCl₂
3. MgCO₃
4. Mg(OH)₂
Which is the formula of magnesium sulphate? [9f-29]
1. MgSO₄
2. MgCl₂
3. MgCO₃
4. Mg(OH)₂
Which is the formula of magnesium chloride? [9f-30]
1. MgSO₄
2. MgCl₂
3. MgCO₃
4. Mg(NO₃)₂
Which is the formula of magnesium carbonate? [9f-31]
1. MgSO₄
2. MgCl₂
3. MgCO₃
4. Mg(NO₃)₂
Which is the formula of magnesium nitrate? [9f-32]
1. MgSO₄
2. MgCl₂
3. MgCO₃
4. Mg(NO₃)₂
Sodium hydroxide is a strong alkali, the pH of its aqueous solution is likely to be? [9f-33]
1. pH 1
2. pH 7
3. pH 10
4. pH 13
[9f-34] Which three numbers a, b and c are required to balance the equation:
a Li_(s) + b O_2(g) ==> c Li₂O_(s)
1. 4 1 2
2. 2 1 2
3. 4 2 1
4. 2 2 1
Which four numbers a, b, c and d are required to balance the equation? [9f-35]
a Na_(s) + b H₂O_(l) ==> c NaOH_(aq) + d H_2(g)
1. 2 1 2 1
2. 2 2 2 1
3. 1 2 1 2
4. 1 1 1 2
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-36]
1. they have unusually low densities
2. they have unusually high melting points
3. they are typical hard metals
4. they are poor conductors of heat
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-37]
1. they have unusually high densities
2. they have unusually low melting points
3. they are typical hard metals
4. they are poor conductors of electritcity
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-38]
1. they have unusually high densities
2. they have unusually high melting points
3. they are unusually soft metals
4. they are poor conductors of heat
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-39]
1. they have unusually high densities
2. they have unusually high melting points
3. they are typical hard metals
4. they are good conductors of heat
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-40]
1. they have unusually high densities
2. they have unusually high melting points
3. they are typical hard metals
4. they are good conductors of heat
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-41]
1. when pure they are silver solids
2. they have untypically low boiling points
3. they are untypical hard metals
4. they are poor conductors of electricity because they only have one free outer electron in the metal lattice
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-42]
1. when pure they are colourless solids
2. they have untypically low boiling points
3. they are kept under oil because of their reactivity to oxygen
4. they are poor conductors of electricity because they only have one free outer electron in the metal lattice
When an alkali metal reacts with the non-metal oxygen, which statement is TRUE about the compound formed? [9f-43]
1. it will have a low melting point
2. it will be a pale green solid
3. it will dissolve in water to give an alkaline solution of pH 14
4. it will be a covalent compound
Which is TRUE about the reaction of sodium and water containing universal indicator? [9f-44]
1. the products are sodium hydroxide and hydrogen
2. the reaction is fast and endothermic
3. the indicator turns from neutral green (pH 7) to strongly acid red (pH 1)
4. the gas formed causes a glowing splint to re-ignite
Which is TRUE about the reaction of lithium and water containing universal indicator? [9f-45]
1. the products are lithium oxide and hydrogen
2. the reaction is fast and exothermic
3. the indicator turns from acid red (pH 3) to neutral green (pH 7)
4. the metal sinks but carries on reacting
Which is TRUE about the reaction of potassium and water containing universal indicator? [9f-46]
1. the products are potassium oxide and hydrogen
2. the reaction is fast and endothermic
3. the indicator turns from neutral green (pH 7) to strongly alkaline purple (pH 14)
4. the metal sinks but carries on reacting
Which is TRUE about the reaction of lithium and water containing universal indicator? [9f-47]
1. the products are lithium oxide and hydrogen
2. the reaction is fast and endothermic
3. the indicator turns from neutral green (pH 7) to weakly alkaline dark green (pH 8)
4. the gas formed gives a pop with a lit splint
Which is TRUE about the reaction of potassium and water containing universal indicator? [9f-48]
1. the reaction is so exothermic the gas formed burns with a lilac flame
2. the products are potassium hydroxide and oxygen
3. the indicator turns from neutral green (pH 7) to weakly alkaline dark green (pH 8)
4. the gas formed re-ignites a glowing splint
Given the equation ... [9f-49]
2Li_(X) + 2H₂O_(?) ==> 2LiOH_(?) + H_2(?)
Which state symbol should be where (X) is?
1. (s)
2. (l)
3. (aq)
4. (g)
Given the equation ... [9f-50]
2Na_(?) + 2H₂O_(X) ==> 2NaOH_(?) + H_2(?)
Which state symbol should be where (X) is?
1. (s)
2. (l)
3. (aq)
4. (g)
Given the equation ... [9f-51]
2K_(?) + 2H₂O_(?) ==> 2KOH_(X) + H_2(?)
Which state symbol should be where (X) is?
1. (s)
2. (l)
3. (aq)
4. (g)
Given the equation ... [9f-52]
2Rb_(?) + 2H₂O_(?) ==> 2RbOH_(?) + H_2(X)
Which state symbol should be where (X) is?
1. (s)
2. (l)
3. (aq)
4. (g)
When sodium reacts with water, the products are? [9f-53]
1. sodium hydroxide and hydrogen
2. sodium hydroxide and oxygen
3. sodium hydride and oxygen
4. sodium oxide and hydrogen
[9f-54] Which completes the equation: potassium + water ==> ? + ?
1. potassium oxide + hydrogen
2. potassium hydroxide + hydrogen
3. potassium hydride + oxygen
4. potassium hydroxide + oxygen
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-55]
1. they are very hard
2. lumps of them are not easily shaped
3. when freshly cut they are shiny
4. they have low boiling points
Which is TRUE about lithium, sodium and potassium, known as the Alkali Metals? [9f-56]
1. they are very hard
2. they have high melting points
3. when freshly cut they are dull looking
4. lumps of them are easily shaped
Which metal is less reactive than copper? [9f-57]
1. Gold
2. Sodium
3. Iron
4. Aluminium
Which metal is more reactive than magnesium? [9f-58]
1. Gold
2. Sodium
3. Iron
4. Aluminium
Which metal is more reactive than hydrogen but less reactive than carbon? [9f-59]
1. Gold
2. Sodium
3. Iron
4. Aluminium
Which metal is less reactive than sodium but cannot be extracted heating with carbon in a furnace? [9f-60]
1. Gold
2. Potassium
3. Iron
4. Aluminium
Which is formed when a metal reacts with either water or an acid? [9f-61]
1. a metal hydroxide
2. a salt
3. hydrogen
4. an oxide
Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ... [9f-62]
... Metal Wa does not readily react with dilute acid
... Metals Xb and Yc react slowly with acid
... Metal Zd will displace Yc from the sulphate salt solution of Yc (YcSO_4(aq))
... Metal Zd will NOT displace Xb from the chloride salt solution of Xb (XbCl_2(aq))
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive, which metal corresponds to (1), the most reactive of the four metals?
1. metal Xb
2. metal Zd
3. metal Yc
4. metal Wa
Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ... [9f-63]
... Metal Wa does not readily react with dilute acid
... Metals Xb and Yc react slowly with acid
... Metal Zd will displace Yc from the sulphate salt solution of Yc (YcSO_4(aq))
... Metal Zd will NOT displace Xb from the chloride salt solution of Xb (XbCl_2(aq))
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive, which metal corresponds to (2), the 2nd most reactive of the four metals?
1. metal Xb
2. metal Zd
3. metal Yc
4. metal Wa
Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ... [9f-64]
... Metal Wa does not readily react with dilute acid
... Metals Xb and Yc react slowly with acid
... Metal Zd will displace Yc from the sulphate salt solution of Yc (YcSO_4(aq))
... Metal Zd will NOT displace Xb from the chloride salt solution of Xb (XbCl_2(aq))
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive, which metal corresponds to (3), the 3rd most reactive of the four metals?
1. metal Xb
2. metal Zd
3. metal Yc
4. metal Wa
Information is given below on the reactivity of four metals Wa, Xb, Yc and Zd (NOT their real chemical symbols) ... [9f-65]
... Metal Wa does not readily react with dilute acid
... Metals Xb and Yc react slowly with acid
... Metal Zd will displace Yc from the sulphate salt solution of Yc (YcSO_4(aq))
... Metal Zd will NOT displace Xb from the chloride salt solution of Xb (XbCl_2(aq))
If their reactivity order is from the most reactive (1) (2) (3) (4) to the least reactive, which metal corresponds to (4), the least reactive of the four metals?
1. metal Xb
2. metal Zd
3. metal Yc
4. metal Wa
From the four elements listed, which is a metal which maybe found in the ground as the metal itself? [9f-66]
1. copper
2. hydrogen
3. iron
4. magnesium
From the four elements listed, which is a non-metal with no metallic character at all? [9f-67]
1. copper
2. hydrogen
3. iron
4. magnesium
From the four elements listed, which is a metal that displaces hydrogen from acids but not from cold water? [9f-68]
1. copper
2. gold
3. iron
4. magnesium
From the four elements listed, which is a metal that cannot be extracted by displacement with carbon? [9f-69]
1. copper
2. hydrogen
3. iron
4. magnesium
Which is less reactive than copper? [9f-70]
1. Platinum
2. Potassium
3. Zinc
4. Magnesium
Which is more reactive than magnesium? [9f-71]
1. Platinum
2. Potassium
3. Zinc
4. Magnesium
Which is more reactive than hydrogen but less reactive than carbon? [9f-72]
1. Platinum
2. Potassium
3. Zinc
4. Magnesium
Which is less reactive than sodium but cannot be extracted from its ore using carbon? [9f-73]
1. Platinum
2. Potassium
3. Zinc
4. Magnesium
Which is found in rocks as the metal itself? [9f-74]
1. Gold
2. Carbon
3. Zinc
4. Potassium
Which is a metal that displaces hydrogen from dilute acids but not from cold water? [9f-75]
1. Gold
2. Carbon
3. Zinc
4. Potassium
Which cannot be extracted from its ore with carbon? [9f-76]
1. Gold
2. aluminium
3. Zinc
4. Potassium
A steel pier in the sea rusts. The rust consists of? [9f-77]
1. iron carbonate
2. iron oxide
3. iron chloride
4. iron sulphate
Which of these reactions is possible? [9f-78]
1. Zn + CuO ==> ZnO + Cu
2. Pb + ZnCl₂ ==> PbCl₂ + Zn
3. Cu + FeSO₄ ==> CuSO₄ + Fe
4. Au + 2HCl ==> AuCl₂ + H₂
Which of these reactions is possible? [9f-79]
1. PbO + Cu ==> CuO + Pb
2. Zn + PbCl₂ ==> ZnCl₂ + Pb
3. Cu + FeSO₄ ==> CuSO₄ + Fe
4. Pt + 2HCl ==> PtCl₂ + H₂
Which of these reactions is possible? [9f-80]
1. SnO + Cu ==> CuO + Sn
2. Pb + SnCl₂ ==> PbCl₂ + Sn
3. Fe + CuSO₄ ==> FeSO₄ + Cu
4. Cu + H₂SO₄ ==> CuSO₄ + H₂
Which of these reactions is possible? [9f-81]
1. PbO + Pt ==> PtO + Pb
2. Pb + SnCl₂ ==> PbCl₂ + Sn
3. Pt + CuSO₄ ==> PtSO₄ + Cu
4. Sn + H₂SO₄ ==> SnSO₄ + H₂
Which of these reactions is possible? [9f-82]
1. lead + copper oxide ==> lead oxide + copper
2. copper + hydrochloric acid ==> copper chloride + hydrogen
3. iron + zinc sulphate ==> iron sulphate + zinc
4. lead + tin sulphate ==> lead sulphate + tin
Which of these reactions is possible? [9f-83]
1. lead + zinc oxide ==> lead oxide + zinc
2. zinc + hydrochloric acid ==> zinc chloride + hydrogen
3. tin + zinc sulphate ==> tin sulphate + zinc
4. lead + tin sulphate ==> lead sulphate + tin
Which of these reactions is possible? [9f-84]
1. lead + zinc oxide ==> zinc oxide + copper
2. platinum + sulphuric acid ==> platinum sulphate + hydrogen
3. zinc + iron sulphate ==> zinc sulphate + iron
4. gold + tin chloride ==> gold chloride + tin
Which of these reactions is possible? [9f-85]
1. silver + copper oxide ==> silver oxide + copper
2. copper + sulphuric acid ==> copper sulphate + hydrogen
3. iron + zinc chloride ==> iron chloride + zinc
4. tin + gold sulphate ==> tin sulphate + gold
Which of the following cannot be predicted about metal X, given its position in the reactivity series of metals? [9f-86]
1. whether X reacts with acid to form hydrogen
2. whether X acts as a catalyst
3. the method of extraction of X from an ore
4. the products, if any, of reacting metal X with the sulphate solution of another metal
Which will displace iron from iron oxide? [9f-87]
1. tin
2. copper
3. magnesium
4. silver
Road tankers carrying acid use steel tanks lined with glass. The glass is used because? [9f-88]
1. glass only reacts with alkalis
2. steel is not strong enough on its own
3. glass is flexible enough to withstand a crash
4. acid reacts with steel forming hydrogen
When a metal is used outside, corrosion occurs when the metal is attacked by? [9f-89]
1. oxygen
2. hydrogen
3. nitrogen
4. carbon dioxide
When scrap iron is added to blue copper sulphate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pinky-brown deposit is? [9f-90]
1. steel
2. copper metal
3. iron sulphate
4. rust
When scrap iron is added to blue copper sulphate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pale green solution is of? [9f-91]
1. sulphuric acid
2. iron oxide
3. iron sulphate
4. copper chloride
When iron becomes coated in rust, the chemical process is an example of? [9f-92]
1. electrolysis
2. electroplating
3. reduction
4. oxidation
Copper can be used for roofing domes on buildings because it? [9f-93]
1. corrodes very slowly
2. cannot react with water and oxygen
3. forms a protective green carbonate layer on the surface
4. forms a protective black oxide layer layer on the surface
In which reaction is a metal oxidised? [9f-94]
1. magnesium + water (steam) ==> magnesium oxide + hydrogen
2. carbon + oxygen ==> carbon dioxide
3. hydrogen + lead oxide ==> lead + water
4. copper oxide + carbon ==> copper + carbon dioxide
In which reaction is a solid non-metal oxidised? [9f-95]
1. magnesium + water (steam) ==> magnesium oxide + hydrogen
2. carbon + water ==> hydrogen + carbon monoxide
3. hydrogen + lead oxide ==> lead + water
4. copper oxide + hydrogen ==> copper + water
In which reaction is a gaseous non-metal oxidised? [9f-96]
1. magnesium + water ==> magnesium hydroxide + hydrogen
2. carbon + water ==> hydrogen + carbon monoxide
3. hydrogen + lead oxide ==> lead + water
4. copper oxide + carbon ==> copper + carbon dioxide
In which reaction is a metal oxide reduced? [9f-97]
1. magnesium + water ==> magnesium hydroxide + hydrogen
2. carbon + water ==> hydrogen + carbon monoxide
3. water (steam) + magnesium ==> magnesium oxide + hydrogen
4. copper oxide + carbon ==> copper + carbon dioxide
Which three numbers a, b and c are required to balance the equation? [9f-98]
a Fe_(s) + b O_2(g) ==> c Fe₃O_4(s)
1. 3 2 1
2. 3 4 1
3. 6 4 2
4. 6 2 2
Which three numbers a, b and c are required to balance the equation? [9f-99]
a Al_(s) + b O_2(g) ==> c Al₂O_3(s)
1. 1 3 2
2. 4 6 4
3. 4 3 2
4. 2 3 2
Which three numbers a, b and c are required to balance the equation? [9f-100]
a Mg_(s) + b O_2(g) ==> c MgO_(s)
1. 1 1 2
2. 4 2 2
3. 2 1 1
4. 2 1 2
Which four numbers a, b, c and d are required to balance the equation? [9f-101]
a Zn_(s) + b HCl_(aq) ==> c ZnCl_2(aq) + d H_2(g)
1. 1 2 1 1
2. 2 2 2 1
3. 2 1 1 2
4. 1 1 2 2
Which four numbers a, b, c and d are required to balance the equation? [9f-102]
a Fe_(s) + b H₂SO_4(aq) ==> c FeSO_4(aq) + d H_2(g)
1. 1 1 1 2
2. 1 1 1 1
3. 2 2 2 1
4. 2 1 2 2
Which four numbers a, b, c and d are required to balance the equation? [9f-103]
a Ca_(s) + b H₂O_(l) ==> c Ca(OH)_2(aq) + d H_2(g)
1. 2 2 2 1
2. 1 2 1 1
3. 1 2 1 2
4. 2 1 1 2
Which four numbers a, b, c and d are required to balance the equation? [9f-104]
a Fe_(s) + b H₂O_(g) ==> c Fe₃O_4(s) + d H_2(g)
1. 3 4 1 2
2. 2 3 1 4
3. 3 4 1 4
4. 2 3 2 2
Which four numbers a, b, c and d are required to balance the equation? [9f-105]
a Mg_(s) + b CuSO_4(aq) ==> c MgSO_4(aq) + d Cu_(s)
1. 1 1 1 1
2. 2 1 2 2
3. 1 2 1 2
4. 2 2 2 1
Which element is a metal that is most likely to be found in rocks as the metal itself? [9f-106]
1. copper
2. carbon
3. iron
4. sodium
Which element is a metal that displaces hydrogen from dilute acids but not from cold water? [9f-107]
1. copper
2. carbon
3. iron
4. sodium
Which element is a metal that cannot be extracted using carbon? [9f-108]
1. copper
2. tin
3. iron
4. sodium
Which metal is more reactive than hydrogen but less reactive than carbon? [9f-109]
1. tin
2. aluminium
3. copper
4. silver
Which metal is less reactive than sodium but must be extracted using electrolysis of the molten ore? [9f-110]
1. tin
2. aluminium
3. lead
4. silver
Which metal should react with dilute hydrochloric acid, but very slowly? [9f-111]
1. calcium
2. iron
3. lead
4. silver
Which metal is most likely to be found in rocks as the metal itself and not combined with other elements like oxygen? [9f-112]
1. tin
2. aluminium
3. lead
4. silver
Which statement is TRUE about soil? [9g-1]
1. sandy soil has larger rock particles and is well drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from fine rock particles and contains few nutrients
Which statement is TRUE about soill? [9g-2]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has little air in it and few living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from fine rock particles and contains few nutrients
Which statement is TRUE about soil? [9g-3]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots tend to hold soil together and minimise erosion
4. humus is formed from fine rock particles and contains few nutrients
Which statement is TRUE about soill? [9g-4]
1. sandy soil has small rock particles and is poorly drained
2. clay soil has plenty of air in it and thriving with living organisms
3. plant roots tend to break up soil and cause erosion
4. humus is formed from organic material and is rich in nutrients
Which statement is TRUE about soil? [9g-5]
1. loam is a good soil which drains well and is rich in nutrients
2. organisms like worms help circulate water
3. most soils have a pH between 1 and 4
4. lime is used to treat soil that is too alkaline
Which statement is TRUE about soil? [9g-6]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate air
3. most soils have a pH between 1 and 4
4. lime is used to treat soil that is too alkaline
Which statement is TRUE about soil? [9g-7]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate water
3. most soils have a pH between 4.5 and 7.5
4. lime is used to treat soil that is too alkaline
Which statement is TRUE about soil? [9g-8]
1. loam is a poor soil which drains poorly and is low in nutrients
2. organisms like worms help circulate water
3. most soils have a pH between 7 and 12
4. lime is used to treat soil that is too acid
Which is TRUE about the weathering of buildings? [9g-9]
1. the growth of tree roots can cause considerable damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers cause no erosion problems
4. the higher the pH of rain, the more erosion it causes
Which is TRUE about the weathering of buildings? [9g-10]
1. the growth of tree cannot cause damage to buildings
2. porous stone weathers easily due to absorbed rainwater
3. styles over walls for walkers cause no erosion problems
4. the higher the pH of rain, the more erosion it causes
TRUE about the weathering of buildings? [9g-11]
1. the growth of tree cannot cause damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers can cause erosion problems
4. the higher the pH of rain, the more erosion it causes
TRUE about the weathering of buildings? [9g-12]
1. the growth of tree cannot cause damage to buildings
2. porous stone does not weather easily due to rainwater quickly running off
3. styles over walls for walkers cause no erosion problems
4. the lower the pH of rain, the more erosion it causes
Which of these is the main source of sulphur dioxide that causes acid rain? [9g-13]
1. burning fossil fuels
2. earthquake activity
3. nuclear power stations
4. severe electrical storms
Which of these is a source of sulphur dioxide which causes acid rain? [9g-14]
1. burning hydrogen fuel gas
2. volcanic activity
3. nuclear power stations
4. severe electrical storms
Which building material is least likely to be rapidly eroded by acid rain? [9g-15]
1. limestone
2. marble
3. granite
4. sandstone
Which building material is least likely to be rapidly eroded by acid rain? [9g-16]
1. limestone
2. sandstone
3. marble
4. slate
Which building material is likely to be the most rapidly eroded by acid rain? [9g-17]
1. limestone
2. granite
3. marble
4. slate
Which building material is most likely to be most rapidly eroded by acid rain? [9g-18]
1. granite
2. sandstone
3. marble
4. slate
Which is used for the rapid treatment of lakes which are to acid for most aquatic life? [9g-19]
1. sand grains
2. marble chips
3. powdered lime
4. peat
Which of these is a fossil fuel for power stations? [9g-20]
1. uranium
2. hydrogen
3. wood
4. coal
Which of these is a fossil fuel for power stations? [9g-21]
1. oil
2. hydrogen
3. wood
4. uranium
Which of these is a fossil fuel for power stations? [9g-22]
1. hydrogen
2. natural gas
3. wood
4. uranium
Which best describes the formation of a fossil fuel? [9g-23]
1. charred remains of plants or animals
2. partial oxidation decay of plant and animal remains
3. decay of buried plant or animal remains without the presence of oxygen
4. decay of plant or animal remains in soil
Which is a product from the complete combustion of a fossil fuel? [9g-24]
1. carbon monoxide
2. carbon
3. hydrogen
4. water
Which is a gaseous product formed from the complete combustion of a fossil fuel? [9g-25]
1. carbon dioxide
2. carbon
3. nitrogen
4. carbon monoxide
Which is a dark solid pollution product from the incomplete combustion of a fossil fuel? [9g-26]
1. carbon dioxide
2. carbon
3. water
4. nitrogen
Which is a pollution product from the incomplete combustion of a fossil fuel? [9g-27]
1. carbon dioxide
2. water
3. carbon monoxide
4. nitrogen
Which most likely provides evidence of global warming? [9g-28]
1. less rainfall in Northern Europe
2. increased fish stocks in the Atlantic Ocean
3. increased ice sheet area at the South Pole
4. thicker growth rings in trees of Northern Europe
Which most likely provides evidence of global warming? [9g-29]
1. increased drought in parts of Africa
2. decreased fish stocks of the Atlantic Ocean
3. increased ice sheet area at the South Pole
4. thinner growth rings in trees in Northern Europe
Which most likely provides evidence of global warming? [9g-30]
1. less rainfall in Northern Europe
2. a decrease in ice sheet area at the North Pole
3. an increase in fish stocks in the Pacific Ocean
4. thinner growth rings on trees in Northern Europe
Rainwater is naturally acidic due to dissolved? [9g-31]
1. oxygen
2. nitrogen
3. carbon dioxide
4. carbon monoxide
Which explains the importance of the ozone layer? [9g-32]
1. it reduces the amount of carbon dioxide in the lower atmosphere
2. it reduces the amount of carbon monoxide in the atmosphere of cities
3. it help maintains the amount of oxygen in the Earth's atmosphere
4. it reduces the amount of harmful ultraviolet radiation that reaches the Earth's surface
Which word equation corresponds to respiration? [9g-33]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen oxide
Which word equation corresponds to a fossil fuel combustion? [9g-34]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. carbon monoxide + nitrogen monoxide ==> carbon dioxide + nitrogen
Which word equation corresponds to photosynthesis? [9g-35]
1. glucose + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen oxide
Which word equation corresponds to the formation of a toxic acidic gas when fossil fuels are burned? [9g-36]
1. coal + oxygen ==> water + carbon dioxide
2. hydrocarbon + oxygen ==> water + carbon dioxide
3. water + carbon dioxide ==> glucose + oxygen
4. nitrogen + oxygen ==> nitrogen dioxide
Rainwater always contains small amounts of the weakly acidic gas carbon dioxide dissolved from air. Which most likely describes what happens to the pH of rainwater when it runs over limestone rock? [9g-37]
1. the pH rises from 5.5 to 8
2. the pH falls from 5.5 to 3
3. the pH rises from 7 to 10
4. the pH falls from 7 to 7.5
Which harmful gas is reduced in car exhaust emissions by using a catalytic converter? [9g-38]
1. water
2. nitrogen oxide
3. carbon dioxide
4. nitrogen
Which harmful gas is reduced in car exhaust emissions by using a catalytic converter? [9g-39]
1. water
2. carbon dioxide
3. carbon monoxide
4. nitrogen
Which is used to treat soil which is too alkaline? [9g-40]
1. lime
2. marble
3. sand
4. peat
Which is used to treat soil which is too acid? [9g-41]
1. lime
2. marble
3. sand
4. peat
Which is believed to be the current main cause of the so-called 'Greenhouse Effect'? [9g-42]
1. increased volcanic activity
2. burning fossil fuels
3. reduction of the ozone layer
4. increase in cloud cover above the Earth
Which of the following explains the 'Greenhouse Effect'? [9g-43]
1. decrease in the ozone layer allows more heat radiation to reach the Earth's surface
2. increase in the ozone layer decreases the amunt of ultraviolet radiation the reaches the Earth's surface
3. increase in carbon dioxide in the atmoshere traps more heat radiation from the Earth
4. decrease in carbon dioxide in the atmosphere traps more allows more ultraviolet radiation to reach the Earth's surface
Which of these causes a reduction in the ozone layer? [9g-44]
1. increased burning of fossil fuels
2. increased photochemical smog in cities
3. increased sea temperature due to global warming
4. increase in the use of chemicals in refrigerators and aerosol cans
What is another term for the 'Greenhouse Effect'? [9g-45]
1. global warming
2. ozone reduction
3. atmospheric acidification
4. smog production
Which of the following is a gas emitted from factories and power stations that causes acid rain? [9g-46]
1. nitrogen
2. sulphur dioxide
3. carbon monoxide
4. hydrogen
Which of the following 'phrases' describes how pollution is reduced in the exhaust of a motor vehicle? [9g-47]
1. 'auto ignition prevention'
2. 'high compression ratio'
3. 'catalytic converter'
4. 'electronic fuel injection'
Which of these is a power station fuel, which does not produce carbon dioxide that causes the 'Greenhouse Effect' or 'global warming'? [9g-20]
1. coal
2. oil
3. peat
4. uranium
Which is a harmless colourless liquid at room temperature, formed by the combustion of a fossil fuel? [9g-49]
1. water
2. carbon dioxide
3. nitrogen dioxide
4. carbon monoxide
Which is a harmless colourless gas at room temperature, formed by the combustion of a fossil fuel? [9g-50]
1. water
2. carbon dioxide
3. nitrogen dioxide
4. carbon monoxide
Which gas in the atmosphere most contributes to global warming? [9g-51]
1. carbon monoxide
2. nitrogen
3. carbon dioxide
4. hydrogen
Which most likely provides evidence of global warming? [9g-52]
1. thinner growth rings on trees in Northern Europe
2. less rainfall in Northern Europe
3. an increase in the ice sheets of Greenland
4. butterflies breeding in more northerly latitudes than before
Hydrocarbon fuels burn to form carbon dioxide and water. Which is a correct description of a chemical test for carbon dioxide? [9h-1]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
Hydrocarbon fuels burn to form carbon dioxide and water. Which is a correct description of a chemical test for water? [9h-2]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns universal indicator green
4. boils at 100^oC
Hydrocarbon fuels burn to form carbon dioxide and water. Which is a correct description of a chemical test for water? [9h-3]
1. white milky precipitate with limewater
2. turns universal indicator green
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
Hydrocarbon fuels burn to form carbon dioxide and water. Which is a correct description of a physical test for water? [9h-4]
1. white milky precipitate with limewater
2. turns white copper sulphate powder blue
3. turns blue cobalt chloride paper pink
4. boils at 100^oC
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the largest voltage? [9h-5]
1. magnesium and silver
2. zinc and iron
3. magnesium and zinc
4. zinc and tin
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the smallest voltage? [9h-6]
1. magnesium and silver
2. zinc and iron
3. magnesium and zinc
4. zinc and tin
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the biggest voltage? [9h-7]
1. zinc and copper
2. zinc and tin
3. magnesium and copper
4. tin and lead
A simple battery (cell) can be made by dipping two different strips of metal into a conducting salt solution of ions. Which two metals will produce the smallest voltage? [9h-8]
1. zinc and copper
2. zinc and tin
3. magnesium and copper
4. tin and lead
A suitable material for a match head can be made from a mixture of carbon, sulphur and potassium chlorate. Which best explains how the match ignites on striking it? [9h-9]
1. friction generates heat to trigger the reaction
2. friction allows air to get to the carbon and sulphur
3. friction breaks down the potassium chlorate into smaller reactive particles
4. friction makes the carbon and sulphur combine exothermically
A suitable material for a match head can be made from a mixture of carbon, sulphur and potassium chlorate. Which best explains the role of the carbon? [9h-10]
1. acts as a catalyst to help burn the sulphur
2. burns with oxygen from the potassium chlorate
3. produces oxygen to burn the sulphur
4. absorbs poisonous gases formed in the combustion reaction
A suitable material for a match head can be made from a mixture of carbon, sulphur and potassium chlorate. Which best explains the role of the potassium chlorate? [9h-11]
1. acts a catalyst to trigger the reaction
2. burns exothermically with oxygen from the air
3. produces oxygen to burn the sulphur
4. absorbs poisonous gases formed in the combustion reaction
A suitable material for a match head can be made from a mixture of carbon, sulphur and potassium chlorate. Which best explains the role of the sulphur? [9h-12]
1. absorbs poisonous combustion gases
2. helps to burn the carbon
3. produces oxygen to burn the carbon
4. burns with oxygen from the potassium chlorate
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-13]
1. carbon monoxide will burn and carbon dioxide will not
2. both gases give a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-14]
1. neither compound will burn in air
2. only carbon dioxide gives a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-15]
1. neither compound will burn in air
2. both gases give a milky precipitate when bubbled into limewater
3. only carbon monoxide gas is toxic to animals
4. carbon monoxide is an element and carbon dioxide is a compound
Carbon dioxide is formed in the complete combustion of a fuel. Carbon monoxide can be formed in the incomplete combustion of a fuel. Which statement is TRUE about these two gases? [9h-16]
1. neither compound will burn in air
2. both gases give a milky precipitate when bubbled into limewater
3. both gases are toxic to animals
4. both gases are compounds
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-17]
1. on burning it produces no pollution effects
2. on burning it gives off a lot of wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-18]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off little wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-19]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off lots of wasted light energy
3. it is explosive when mixed with air
4. it is easily delivered in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-20]
1. on burning it produces lots of greenhouse gases
2. on burning it gives off lots of wasted light energy
3. it is not as flammable or explosive as oil
4. it has to be compressed before it can be distributed efficiently
Which word would you associate with the phrase 'a substance that releases energy on burning'? [9h-21]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'reaction that gives out heat'? [9h-22]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'easily changes chemically'? [9h-23]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which word would you associate with the phrase 'reaction that absorbs heat'? [9h-24]
1. fuel
2. exothermic
3. reactive
4. endothermic
Which is formed in the complete combustion of a hydrocarbon fuel? [9h-25]
1. H₂O
2. C₈H₁₈
3. CO
4. O₂
Which substance is found in petrol? [9h-26]
1. C
2. C₈H₁₈
3. CO
4. H₂
Which substance is most likely to form in the incomplete (inefficient) burning of a fuel? [9h-27]
1. H₂O
2. C₈H₁₈
3. CO
4. CO₂
Which substance is needed to burn any fuel? [9h-28]
1. H₂O
2. C₈H₁₈
3. CO
4. O₂
Which substance could be a fuel of the future? [9h-29]
1. H₂
2. C₈H₁₈
3. CO
4. C
Which substance is a product of the complete combustion of a fuel? [9h-30]
1. C
2. CO₂
3. CO
4. O₂
Which substance is a colourless flammable liquid? [9h-31]
1. H₂O
2. C
3. C₈H₁₈
4. CO₂
Which substance is a hydrocarbon? [9h-32]
1. H₂
2. CO
3. C
4. C₈H₁₈
Which is likely to be the most exothermic reaction? (produces the biggest temperature rise) [9h-33]
1. magnesium + copper sulphate ==> magnesium sulphate + copper
2. tin + lead nitrate ==> tin nitrate + lead
3. copper + aluminium sulphate ==> copper sulphate + aluminium
4. aluminium + iron nitrate ==> aluminium nitrate + iron
Which of the following reactions is likely to be the least exothermic? (produces the smallest temperature rise) [9h-34]
1. magnesium + copper sulphate ==> magnesium sulphate + copper
2. tin + lead nitrate ==> tin nitrate + lead
3. aluminium + copper sulphate ==> aluminium sulphate + copper
4. aluminium + iron nitrate ==> aluminium nitrate + iron
Which of the following reactions is likely to be the most exothermic? (produces the largest temperature rise) [9h-35]
1. copper + magnesium sulphate ==> copper sulphate + magnesium
2. zinc + tin nitrate ==> zinc nitrate + lead
3. calcium + silver nitrate ==> calcium nitrate + silver
4. iron + tin sulphate ==> iron sulphate + tin
Which of the following reactions is likely to be the least exothermic? (produces the smallest temperature rise) [9h-36]
1. magnesium + zinc sulphate ==> magnesium sulphate + zinc
2. zinc + lead nitrate ==> zinc nitrate + lead
3. calcium + silver nitrate ==> calcium nitrate + silver
4. iron + tin sulphate ==> iron sulphate + tin
Which chemical change corresponds to a 'neutralisation reaction'? [9h-37]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulphate ==> zinc sulphate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'fuel combustion' reaction? [9h-38]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulphate ==> zinc sulphate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'displacement reaction'? [9h-39]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulphate ==> zinc sulphate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Which of these chemical changes corresponds to a 'decomposition reaction'? [9h-40]
1. sodium hydroxide + hydrochloric acid ==> sodium chloride + water
2. methane + oxygen ==> carbon dioxide + water
3. zinc + copper sulphate ==> zinc sulphate + copper
4. calcium carbonate ==> calcium oxide + carbon dioxide
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the most efficient to use in such a device? [9h-41]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the least efficient to use in such a device? [9h-42]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the 2nd most efficient to use in such a device? [9h-43]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
Experiments were done to decide which chemicals would be best to use for an emergency food cooking heater. The chemicals on mixing need to react exothermically to release heat. Chemicals can be tested in a simple calorimeter to measure the temperature rise. From the results for mixtures A to D, which would be the 3rd most efficient to use in such a device? [9h-44]
1. 10g mix, temperature rose from 23^o to 43^oC
2. 20g mix, temperature rose from 25^o to 35^oC
3. 30g mix, temperature rose from 30^o to 75^oC
4. 40g mix, temperature rose from 28^o to 68^oC
In a measured (quantitative) experiment, burning 2.4g of magnesium produced 4.0g of white magnesium oxide powder (MgO). What mass of oxygen combined with the magnesium? [9h-45]
1. 1.6g
2. 2.4g
3. 3.2g
4. 6.4g
In a measured (quantitative) experiment, burning 2.4g of magnesium produced 4.0g of white magnesium oxide powder (MgO). What mass of magnesium oxide might you expect if 3.6g of magnesium was burned? [9h-46]
1. 2.4g
2. 6.0g
3. 7.2g
4. 6.4g
Calcium carbonate decomposes on strong heating to form solid calcium oxide and carbon dioxide gas.
CaCO₃ ==> CaO + CO₂
If 100g of calcium carbonate is decomposed to give a residue of 56g of calcium oxide, what is the mass of the carbon dioxide formed? [9h-47]
1. 0g
2. 56g
3. 44g
4. 54g
If 30g of salt is dissolved in 100g of water, what mass of salt solution is formed? [9h-48]
1. 70g
2. 100g
3. 30g
4. 130g
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-49]
1. on burning it produces only water
2. on burning it gives off a lot of wasted light energy
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
Hydrogen could well be a fuel for the future but there are advantages and disadvantages to its use. Which statement is TRUE about the potential use of hydrogen as a fuel? [9h-50]
1. on burning it gives off a lot of wasted light energy
2. it is a dangerously explosive gas
3. it is not as flammable or explosive as oil
4. it is easily delivered to homes in liquid form
When a metal is heated or burned in air, the product weighs more than the metal. What is the reason for this observation? [9h-51]
1. the metal absorbs oxygen from the air
2. the metal absorbs water vapour from the air
3. the metal combines with oxygen in the air
4. the metal combines with nitrogen in the air
Propane gas (C₃H₈) can be used in gas cookers and burns in just the same way methane completely burns in a bunsen flame. Which is the correct right hand side of the equation to balance the left hand side given below? [9h-52]
C₃H₈ + 5O₂ ==> ? + ?
1. 3CO + 4H₂O
2. 3CO₂ + 2H₂O
3. 4CO₂ + 8HO
4. 3CO₂ + 4H₂O
Which part of the chemical industry manufactures drugs and medicines? [9h-53]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures colours for clothes? [9h-54]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures PVC for windows? [9h-55]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical
Which part of the chemical industry manufactures hydrocarbon fuels? [9h-56]
1. pharmaceutical
2. dyestuffs
3. plastics
4. petrochemical

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KS3 Science-Chemistry Quiz on "Reactions of metals, metal compounds, metal reactivity, environmental chemistry and uses of chemistry" (based on QCA 9E to 9H)

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