KS3 Science-Chemistry Quiz on "Particle models of gases, liquids & solids & solutions" (QCA 7G & 7H)

Which of the following statements best describes the arrangement of particles in a gas? [7g-1]
1. Close together and stationary
2. Close together and vibrating
3. Far apart and moving slowly
4. Very far apart and moving quickly
Which of the following statements best describes the arrangement of particles in a solid?[7g-2]
1. Close together and stationary
2. Close together and vibrating
3. Far apart and moving slowly
4. Very far apart and moving quickly
Which of the following statements best describes the arrangement of particles in a liquid? [7g-3]
1. Close together and stationary
2. Far apart and vibrating
3. Close together and moving freely
4. Very far apart and moving quickly
Which of the following best describes what happens to the particles of water when it freezes? [7g-4]
1. They gain energy and break up into atoms of hydrogen and oxygen
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about
Which of the following best describes what happens to the particles of ice when it melts? [7g-5]
1. They gain energy and break up into atoms of hydrogen and oxygen,
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about
Which of the following best describes what happens to the particles of water when it boils? [7g-6]
1. They gain energy and increase their freedom to move without significant attraction
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about
Which of the following best describes what happens to the particles of water vapour when it condenses? [7g-7]
1. They gain energy and increase their freedom to move without significant attractio
2. They gain energy and gain freedom to move about
3. They lose energy and and are closer and less free to move around
4. They lose energy and lose freedom to move about
Which of the following best describes what happens to the particles of water when it evaporates? [7g-8]
1. The higher kinetic energy particles increase their freedom to move without significant attraction
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about
The table shows the melting points and boiling points of some substances A to D. Which substance is a solid at 25^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-9]
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances A to D. Which substance is a liquid at 0^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-10]
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances A to D. Which substance is a gas at 0^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-11]
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances A to D. Which substance is a liquid at 30^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-12]
1. -39 and 10
2. 119 and 446
3. 15 and 126
4. -127 and -33
Air is in a bottle with a tight screw-top. When the bottle becomes warmer, the pressure inside increases because the molecules of air? [7g-13]
1. become bigger
2. become smaller
3. move faster
4. move slower
Air is in a bottle with a tight screw-top. When the bottle becomes cooler, the pressure inside decreases because the molecules of air? [7g-14]
1. become bigger
2. become smaller
3. move faster
4. move slower
When the air in a room becomes warmer a hanging balloon blown up with air becomes bigger because the molecules of air? [7g-15]
1. become bigger
2. become smaller
3. move faster
4. move slower
When the air in a room becomes warmer a hanging balloon blown up with air becomes smaller because the molecules of air? [7g-16]
1. become bigger
2. become smaller
3. move faster
4. move slower
The table shows the melting points and boiling points of some substances A to D. Which substance is a liquid at 20 ^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-17]
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances A to D. Which substance is a solid at 20^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-18]
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances A to D. Which substance is a gas at -60^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-19]
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances A to D. Which substance is a liquid at -10^oC and a gas at 10^oC?
[Substance] Melting Point ^oC and Boiling Point ^oC [7g-20]
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
When water vapour in a cloud is gradually cooled, rainwater is formed. This change of state is called? [7g-21]
1. condensation
2. distillation
3. evaporation
4. saturation
Heat from the Sun changes water from liquid to a gas. This change of state is called? [7g-22]
1. condensation
2. distillation
3. evaporation
4. saturation
Gases diffuse because they? [7g-23]
1. are made of rapidly moving particles
2. have low boiling points
3. have a low density
4. easily move as convection currents
Liquids and dissolving solids diffuse because they? [7g-24]
1. are made of moving particles
2. have low boiling points
3. have a low density
4. easily move as convection currents
The table below shows the melting points and boiling points of substances A to D. Which substance is a gas at 25^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-25]
1. mpt = -127, bpt = -33
2. mpt = -39, bpt = 354
3. mpt = 63, bpt = 760
4. mpt = 119, bpt = 446
The table below shows the melting points and boiling points of substances A to D. Which substance is a liquid at 25^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-26]
1. mpt = -127, bpt = -33
2. mpt = -39, bpt = 354
3. mpt = 63, bpt = 760
4. mpt = 119, bpt = 446
The table below shows the melting points and boiling points of substances A to D. Which substance is a solid at 100^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-27]
1. mpt = -127, bpt = -33
2. mpt = -39, bpt = 354
3. mpt = 63, bpt = 760
4. mpt = 119, bpt = 446
The table below shows the melting points and boiling points of substances A to D. Which substance is a solid at 100^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-28]
1. mpt = -127, bpt = -33
2. mpt = 99, bpt = 354
3. mpt = 19, bpt = 27
4. mpt = 101, bpt = 116
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range 10^oC to 90^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-29]
1. mpt = 0, bpt = 100
2. mpt = -200, bpt = 40
3. mpt = 20, bpt = 350
4. mpt = -110, bpt = 80
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range -120^oC to 20^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-30]
1. mpt = 0, bpt = 100
2. mpt = -200, bpt = 40
3. mpt = -40, bpt = 350
4. mpt = -110, bpt = 80
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range 0^o>C to 100^oC?
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-31]
1. mpt = 0, bpt = 100
2. mpt = -200, bpt = 40
3. mpt = -40, bpt = 350
4. mpt = -110, bpt = 80
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range -4^oC to 50^oC?
[Substance], Melting point ^oC(mpt), Boiling Point ^oC(bpt) [7g-32]
1. mpt = 0, bpt = 100
2. mpt = -200, bpt = 40
3. mpt = 40, bpt = 350
4. mpt = -110, bpt = 80
Which of the following best explains why gases have a low density? [7g-33]
1. the gas particles are very small
2. the gas particles are far apart
3. gas particles move fast
4. the attractive forces between gas particles are very weak
Which of the following is a particle model of a gas? [7g-34]
Which of the following is a particle model of a liquid? [7g-35]
Which of the following is a particle model of a solid? [7g-36]
Water turning to a solid is called? [7g-37]
1. freezing
2. melting
3. boiling
4. condensing
Butter on a hot plate is seen to be? [7g-38]
1. freezing
2. melting
3. boiling
4. condensing
When water turns to steam it has been? [7g-39]
1. evaporating
2. melting
3. boiling
4. condensing
Which of these is a solid? [7g-40]
1. air
2. oxygen
3. rock
4. water
Which of these is a liquid? [7g-41]
1. air
2. oxygen
3. rock
4. water
Which of these is a gas? [7g-42]
1. air
2. ice
3. rock
4. water
Which of these is a gas? [7g-43]
1. sand
2. oxygen
3. rock
4. water
Which of these is a solid? [7g-44]
1. petrol
2. oxygen
3. ice
4. helium
Which of these is a gas? [7g-45]
1. sand
2. cream
3. petrol
4. helium
Which describes sand? [7g-46]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which describes carbon dioxide? [7g-47]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which describes cooking oil? [7g-48]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which describes a cream cake? [7g-49]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which describes set concrete? [7g-50]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which of A to D describes the smell of food? [7g-51]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which of A to D describes petrol? [7g-52]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which of A to D describes toothpaste? [7g-53]
1. a solid
2. a gas
3. a liquid
4. difficult to classify simply as gas, liquid or solid
Which of the following is the opposite of freezing? [7g-54]
1. melting
2. boiling
3. condensing
4. evaporating
Which of the following is the opposite of condensing? [7g-55]
1. melting
2. boiling
3. freezing
4. dissolving
Which of the following is the opposite of melting? [7g-56]
1. condensing
2. boiling
3. freezing
4. evaporating
Which of the following is the opposite of boiling? [7g-57]
1. evaporating
2. melting
3. freezing
4. condensing
Which of the following is the opposite of evaporating? [7g-58]
1. condensing
2. boiling
3. freezing
4. melting
Which of the following is the opposite of condensing? [7g-59]
1. dissolving
2. evaporating
3. freezing
4. melting
Which of the following best EXPLAINS why liquids flow much more easily than solids? [7g-60]
1. liquid particles have more energy than solid particles
2. liquid particles are lighter than solid particles
3. liquid particle attractive forces are weaker than solid particle attractive forces
4. liquid particles can change shape more easily than solid particles
Which of the following best EXPLAINS why some different liquids can easily and completely mix together? [7g-61]
1. liquid particles are very tiny
2. liquid particles can change shape very easily
3. liquid particles have lots of space between them
4. liquid particles have weak attractive forces and are free to move around
Which of the following best EXPLAINS why liquids or solids have a high density compared to gases? [7g-62]
1. there is little space between the strongly attracted liquid or solid particles
2. solid and liquid particles are heavier than gas particles
3. there are only very weak forces between gas particles
4. liquid or solid particles neatly fit together
Which of the following best EXPLAINS why most solids expand on heating? [7g-63]
1. there is little space between the particles
2. the particles vibrate more forcefully the higher the temperaure
3. solid particles get bigger on heating
4. any trapped gas expands on heating
The word 'diffusion' means? [7g-64]
1. particles concentrating together
2. particles breaking apart
3. particles spreading around if free to move
4. particles gaining energy
Gas pressure is caused by? [7g-65]
1. gas particles expanding
2. gas particles hitting each other
3. gas particles gaining energy
4. gas particles hitting the container surface
Which of the following best EXPLAINS why gases are easily compressed? [7g-66]
1. gas particles have lots of space between them
2. gas particles are always hitting each other
3. gas particles have little energy
4. gas particles are easily squashed to a smaller shape
Which of the following best EXPLAINS why dust particles seem to 'dance' around at random when seen with a beam of sunlight? [7g-67]
1. they gain energy from the sunlight
2. the larger dust particles are being hit by lots of smaller air particles
3. the dust particles are hit by sunlight energy particles
4. the dust particles move due to warm air convection currents
The diagram shows an experiment using a light colourless gas (air) and a heavier brown coloured gas (bromine or nitrogen dioxide). The gases spread around in the gas jars by a process called? [7g-68]
1. condensation
2. evaporation
3. diffusion
4. sedimentation
The diagram shows an experiment using a light colourless gas (air) and a heavier brown coloured gas (bromine or nitrogen dioxide). The gases fully mix together because? [7g-69]
1. the gases have different densities (one is 'lighter' or 'heavier' than the other)
2. of convection currents in the air
3. the air can sink into the coloured gas and the coloured gas can float on air
4. all the gas particles can move around freely
The diagram shows an experiment using a light colourless gas (air) and a heavier brown coloured gas (bromine or nitrogen dioxide). The gases can completely spread throughout the gas jars because? [7g-70]
1. gas particles are not strongly attracted and free to move
2. there are always convection currents in air
3. the air can sink into the coloured gas and the coloured gas can float on air
4. the gases have different densities (one is 'lighter' or 'heavier' than the other)
Which of the following best EXPLAINS why the gas pressure in a metal cylinder containing oxygen gas, increases if it is heated? [7g-71]
1. more gas particles are formed and so there are more particle hits on the container side
2. the gas particles gain energy and hit the side of the container harder and more often
3. the metal atoms of the container surface vibrate more strongly
4. the gas particles collide and hit each other more frequently
Which of the following best describes a GAS? [7g-72]
1. definite volume, definite shape, does not readily flow, high density
2. fills container, definite shape, does not readily flow, low density
3. fills container, takes shape of container, flows easily, low density
4. definite volume, takes shape of container, flows easily, high density
Which of the following best describes a LIQUID? [7g-73]
1. definite volume, definite shape, does not readily flow, high density
2. fills container, definite shape, does not readily flow, low density
3. fills container, takes shape of container, flows easily, low density
4. definite volume, takes shape of container, flows easily, high density
Which of the following best describes a SOLID? [7g-74]
1. definite volume, definite shape, does not readily flow, high density
2. fills container, definite shape, does not readily flow, low density
3. fills container, takes shape of container, flows easily, low density
4. definite volume, takes shape of container, flows easily, high density
Which of the following best EXPLAINS why a thin wire snaps if too much weight is put on it? [7g-75]
1. the attractive forces between the particles of the wire are weakened by the weight
2. the attractive forces between the particles of the wire are no longer strong enough to match the weight
3. the particles of the wire get stretched and become too thin and weak to hold the weight
4. the particles of the wire lose energy and cannot attract each other anymore
MELTING is the state change from? [7g-76]
1. solid to liquid
2. liquid to solid
3. liquid to gas
4. gas to liquid
FREEZING is the state change from? [7g-77]
1. solid to liquid
2. liquid to solid
3. liquid to gas
4. gas to liquid
BOILING is the state change from? [7g-78]
1. solid to liquid
2. liquid to solid
3. liquid to gas
4. gas to liquid
CONDENSING is the state change from? [7g-79]
1. solid to liquid
2. liquid to solid
3. liquid to gas
4. gas to liquid
EVAPORATING is the state change from? [7g-80]
1. solid to liquid
2. liquid to solid
3. liquid to gas
4. gas to liquid
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-81]
1. X is melting between times t0 and t1
2. X is completely liquid between times t1 and t2
3. X is boiling between times t2 and t3
4. temperature TE1 is the melting point of X
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-82]
1. X is all solid between times t0 and t1
2. X is completely liquid between times t1 and t2
3. X is boiling between times t2 and t3
4. temperature TE2 is the melting point of X
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-83]
1. X is melting between times t0 and t1
2. X is melting between times t1 and t2
3. X is boiling between times t2 and t3
4. temperature TE2 is the melting point of X
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-84]
1. X is boiling between times t4 and t5
2. X is melting between times t0 and t1
3. X is all liquid between times t2 and t3
4. temperature TE1 is the boiling point of X
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-85]
1. X is boiling between times t4 and t5
2. X is all liquid between times t1 and t2
3. X is melting between times t2 and t3
4. temperature TE2 is the boiling point of X
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-86]
1. X is boiling between times t3 and t4
2. X is all liquid between times t1 and t2
3. X is melting between times t2 and t3
4. temperature TE1 is the boiling point of X
In winter freezing conditions can produce cracked milk bottles!
TRUEIn what way does water show UNUSUAL behaviourTRUE? [7g-87]
1. the ice expands on cooling
2. ice has a greater volume than liquid water
3. liquid water contracts on freezing to form ice
4. liquid water is less dense than ice
Problems can arise with railway steel track from changes in temperature.
Small gaps are left between each rail section to allow for changes in length. Which of the following is TRUE about the steel rails and change in temperature? [7g-88]
1. expansion happens when the steel atoms lose vibration energy
2. if no gap is made the rail can get thinner or thicker without becoming dangerously distorted
3. on average the rail track will expand more in the summer than the winter
4. on average the gap will be smaller in the winter than the summer
Problems can arise with railway steel track from changes in temperature.
Small gaps are left between each rail section to allow for changes in length. Which of the following is TRUE about the steel rails and change in temperature? [7g-89]
1. expansion happens when the steel atoms lose vibration energy
2. if no gap is made the rail can get thinner or thicker without becoming dangerously distorted
3. on average the rail track will contract more in the summer than the winter
4. on average the gap will be smaller in the summer than the winter
Problems can arise with railway steel track from changes in temperature.
Small gaps are left between each rail section to allow for changes in length. Which of the following is TRUE about the steel rails and change in temperature? [7g-90]
1. expansion happens when the steel atoms gain vibration energy
2. if no gap is made the rail can get thinner or thicker without becoming dangerously distorted
3. on average the rail track will contract more in the summer than the winter
4. on average the gap will be smaller in the winter than the summer
Problems can arise with railway steel track from changes in temperature.
Small gaps are left between each rail section to allow for changes in length. Which of the following is TRUE about the steel rails and change in temperature? [7g-91]
1. expansion happens when the steel atoms lose vibration energy
2. if no gap is made the rail can get longer becoming dangerously distorted
3. on average the rail track will contract more in the summer than the winter
4. on average the gap will be smaller in the winter than the summer
The graph shows the results of monitoring a hot liquid pure wax as it slowly cooled to room temperature. Which of the following can you deduce from the results? [7g-92]
1. from time b to c, the wax is all solid
2. from time c to d, some wax is still liquid
3. the melting point of the wax is temperature T2
4. from time a to b, solid wax is forming
The graph shows the results of monitoring a hot liquid pure wax as it slowly cooled to room temperature. Which of the following can you deduce from the results? [7g-93]
1. from time b to c, the wax is all solid
2. from time c to d, some wax is still liquid
3. the melting point of the wax is temperature T3
4. from time a to b the wax is still all liquid
The graph shows the results of monitoring a hot liquid pure wax as it slowly cooled to room temperature. Which of the following can you deduce from the results? [7g-94]
1. from time b to c, the wax is changing state from liquid to solid
2. from time c to d, some wax is still liquid
3. the freezing point of the wax is temperature T1
4. from time a to b, the wax is starting to freeze
The graph shows the results of monitoring a hot liquid pure wax as it slowly cooled to room temperature. Which of the following can you deduce from the results? [7g-95]
1. from time b to c, the wax is all liquid
2. from time c to d, all the wax is solid
3. the freezing point of the wax is temperature T1
4. from time a to b, the wax is starting to freeze
The graph shows the results of monitoring a hot liquid pure wax as it slowly cooled to room temperature. Which of the following can you deduce from the results? [7g-96]
1. from time b to c, the wax is all liquid
2. from time c to d, the remaing liquid wax freezes
3. the freezing point of the wax is temperature T2
4. from time a to b, the wax is starting to freeze
Which of the following best EXPLAINS why the liquid in a glass thermometer expands with rise in temperature? [7g-97]
1. the liquid particles get bigger expanding the liquid
2. the glass particles gain more energy and push the liquid particles up the tube
3. the glass contracts forcing the liquid further up the tube
4. the liquid particles gain more energy and collide more forcefully
Starting with the solid, the graph shows the results of measuring the temperature of substance X as it was heated from a low to a high temperature. Which of the following is TRUE? [7g-98]
1. X is all gas between times t4 and t5
2. X is completely liquid between times t1 and t2
3. X is boiling between times t2 and t3
4. temperature TE1 is the boiling point of X
In winter freezing conditions can produce cracked milk bottles. In what way does water show UNUSUAL behaviour? [7g-99]
1. the ice expands on cooling
2. ice has a smaller density than liquid water
3. liquid water contracts on freezing to form ice
4. liquid water is less dense than ice
Problems can arise with railway steel track from changes in temperature.
Small gaps are left between each rail section to allow for changes in length. Which of the following is TRUE about the steel rails and change in temperature? [7g-100]
1. on average the rail track will contract more in the summer than the winter
2. if no gap is made the rail can get thinner or thicker without becoming dangerously distorted
3. contraction happens when the steel atoms lose vibration energy
4. on average the gap will be smaller in the winter than the summer
Which of the following does the particle picture represent? [7g-101]
1. gas
2. liquid
3. solid
4. partly melted solid
Which word means 'it will dissolve'? [7h-1]
1. soluble
2. solute
3. solvent
4. solution
Which word means 'the substance that dissolves'? [7h-2]
1. soluble
2. solute
3. solvent
4. solution
Which word means 'the liquid that dissolves the substance'? [7h-3]
1. soluble
2. solute
3. solvent
4. solution
Which word means 'the mixture from something dissolving'? [7h-4]
1. soluble
2. solute
3. solvent
4. solution
Which of the following means 'it won't dissolve'? [7h-5]
1. insoluble
2. dissolves
3. saturated
4. solubility
Which of the following means 'the solid substance particles completely mixes with the solvent particles'? [7h-6]
1. insoluble
2. dissolves
3. saturated
4. solubility
Which of the following about a solution means 'no more will dissolve'? [7h-7]
1. insoluble
2. dissolves
3. saturated
4. solubility
Which of the following means 'how much will dissolve'? [7h-8]
1. insoluble
2. dissolves
3. saturated
4. solubility
Which word means 'something you don't want in a substance'? [7h-9]
1. impurity
2. pure
3. mixture
4. impure
Which word means 'just one substance in the material'? [7h-10]
1. impurity
2. pure
3. mixture
4. impure
Which word means 'more than one substance in the material'? [7h-11]
1. impurity
2. pure
3. mixture
4. saturated
Which word means 'containing a substance you don't want in a material'? [7h-12]
1. impurity
2. pure
3. saturated
4. impure
The process to separate a mixture of sand and salt is shown in the diagram.
Which word best goes with 'mixing the salt with water'? [7h-13]
1. dissolving
2. filtering
3. evaporating
4. crystallising
The process to separate a mixture of sand and salt is shown in the diagram.
Which word best goes with 'removing the sand'? [7h-14]
1. dissolving
2. filtering
3. evaporating
4. crystallising
The process to separate a mixture of sand and salt is shown in the diagram.
Which word best goes with 'removing the water'? [7h-15]
1. dissolving
2. filtering
3. evaporating
4. crystallising
The process to separate a mixture of sand and salt is shown in the diagram.
Which word best goes with 'getting the pure salt'? [7h-16]
1. dissolving
2. filtering
3. evaporating
4. crystallising
The process to separate a mixture of sand and salt is shown in the diagram.
This process can be used to purify rock salt.
Which of these is the solvent? [7h-17]
1. water
2. sand
3. salt
4. salt solution
The process to separate a mixture of sand and salt is shown in the diagram.
This process can be used to purify rock salt.
Which of these is the insoluble material? [7h-18]
1. water
2. sand
3. salt
4. salt solution
The process to separate a mixture of sand and salt is shown in the diagram.
This process can be used to purify rock salt.
Which of these is the soluble material? [7h-19]
1. water
2. sand
3. salt
4. salt solution
The process to separate a mixture of sand and salt is shown in the diagram.
This process can be used to purify rock salt.
Which of these is the mixture? [7h-20]
1. water
2. sand
3. crystallised salt
4. salt solution
Which salt is the most soluble at 15^oC ? [7h-21]
1. NaCl sodium chloride
2. KNO₃ potassium nitrate
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
Which salt is the most soluble at 55^oC ? [7h-22]
1. NaCl sodium chloride
2. KNO₃ potassium nitrate
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
Which salt is the least soluble at 0^oC ? [7h-23]
1. NaCl sodium chloride
2. KNO₃ potassium nitrate
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
Which salt is the 2nd most soluble at 59^oC ? [7h-24]
1. NaCl sodium chloride
2. KNO₃ potassium nitrate
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
Which salt changes most in solubility with increase in temperature? [7h-25]
1. KNO₃ potassium nitrate
2. NaCl sodium chloride
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
Which salt changes least in solubility with increase in temperature? [7h-26]
1. KNO₃ potassium nitrate
2. NaCl sodium chloride
3. K₂SO₄ potassium sulphate
4. CuSO₄ copper sulphate
What is the solubility of potassium nitrate (KNO₃) in g/100g water at 40⁰C ? [7h-27]
1. 26
2. 60
3. 61
4. 28
What is the solubility of copper sulphate (CuSO₄) in g/100g water at 63⁰C ? [7h-28]
1. 88
2. 90
3. 44
4. 42
What is the solubility of potassium sulphate (K₂SO₄) in g/100g water at 56⁰C ? [7h-29]
1. 18
2. 20
3. 14
4. 22
At what temperature, in ^oC, is the solubility of potassium nitrate (KNO₃) 26g per 100g of water? [7h-30]
1. 13
2. 15
3. 2
4. 4
At what temperature, in ^oC, is the solubility of copper sulphate (CuSO₄) 54g per 100g of water? [7h-31]
1. 96
2. 80
3. 78
4. 98
At what temperature, in ^oC, is the solubility of potassium nitrate (KNO₃) 92g per 100g of water? [7h-32]
1. 56
2. 38
3. 36
4. 54
The process illustrated is called? [7h-33]
1. distillation
2. fermentation
3. filtration
4. sedimentation
In the process illustrated, the change from liquid to vapour is called? [7h-34]
1. distillation
2. evaporation
3. condensation
4. fractionation
In the process illustrated, the change from vapour to liquid is called? [7h-35]
1. distillation
2. evaporation
3. condensation
4. fractionation
In the process illustrated, any dissolved solids will not distill over because they have? [7h-36]
1. too low a boiling point
2. too low a melting point
3. too high a melting point
4. too high a boiling point
The separation process illustrated is called? [7h-37]
1. chromatography
2. distillation
3. filtration
4. radiography
The separation process result illustrated is called the? [7h-38]
1. distillate
2. chromatogram
3. filtrate
4. evaporate
The chromatography separation shows that mixture 6? [7h-39]
1. contains no purple or red
2. contains four colours
3. contains no green or purple
4. only contains blue and red
The chromatography separation shows that mixture 6? [7h-40]
1. contains no green or red
2. contains two colours
3. contains no brown or purple
4. contains blue, brown and red
Which is the fastest way to dissolve a solid in a liquid? [7h-41]
1. heat and stir the liquid and solid mixture
2. put lots of the solid in the liquid
3. put a little solid in a lot of the liquid
4. stir equal amounts of solid and liquid vigorously
Which is the best method to separate coloured substances? [7h-42]
1. distillation
2. chromatography
3. filtration
4. evaporation
If 100 cm³ of saturated potassium nitrate (KNO₃) solution was cooled from 60^oC to 20^oC, what mass of potassium nitrate crystals will form? [7h-43]
1. 70g
2. 78g
3. 74g
4. 82g
If 100 cm³ of saturated copper sulphate (CuSO₄) solution was cooled from 100^oC to 30^oC, what mass of blue copper sulphate crystals will form? [7h-44]
1. 52g
2. 48g
3. 60g
4. 56g
Which corresponds to the particle picture shown? [7h-45]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-46]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-47]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-48]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-49]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-50]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-51]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-52]
1. a pure liquid
2. a solution
3. pure crystals
4. impure crystals
What temperature does the Celsius thermometer read in ^oC ? [7h-53]
1. 36
2. 34
3. 44
4. 35.5
What temperature does the Celsius thermometer read in ^oC ? [7h-54]
1. 3
2. -7
3. 7
4. -3
What temperature does the Celsius thermometer read in ^oC ? [7h-55]
1. 101
2. 102
3. 101.5
4. 103
What temperature does the Celsius thermometer read in ^oC ? [7h-56]
1. 46
2. 47
3. 53.5
4. 46.5
What temperature does the Celsius thermometer read in ^oC ? [7h-57]
1. 132
2. 144
3. 126
4. 131
What temperature does the Celsius thermometer read in ^oC ? [7h-58]
1. 46.5
2. 53
3. 51.5
4. 63.5
What temperature does the Celsius thermometer read in ^oC ? [7h-59]
1. 203
2. 201.5
3. 206
4. 227
What temperature does the Celsius thermometer read in ^oC ? [7h-60]
1. 68.5
2. 81.5
3. 76
4. 77
In this process the change from liquid to vapour is called? [7h-61]
1. boiling
2. distilling
3. condensing
4. fractionating
The process to get pure salt from rock salt is shown in the diagram.
Which of the following would be described as impure? [7h-62]
1. water
2. rock salt
3. crystallised salt
4. salt solution
The process to get pure salt from rock salt is shown in the diagram.
Which of the following would be described as a mixture? [7h-63]
1. water
2. crystallised salt
3. rock salt
4. steam
The process to get pure salt from rock salt is shown in the diagram.
Which of the following would be described as a 'suspension'? [7h-64]
1. the evaporating water
2. the crystallising salt
3. the insoluble solids settling out
4. stirred water and fine sand particles
Which of the words listed goes along with the phrase .... [7h-65]
'explaining something we observed'?
1. interpretation
2. description
3. evaluation
4. prediction
Which of the words listed goes along with the phrase .... [7h-66]
'how we did the experiment'?
1. interpretation
2. description
3. evaluation
4. prediction
Which of the words listed goes along with the phrase .... [7h-67]
'how successful was our experiment'?
1. interpretation
2. description
3. evaluation
4. prediction
Which of the words listed goes along with the phrase .... [7h-68]
'what might happen in our experiment'?
1. interpretation
2. description
3. evaluation
4. prediction
Which corresponds to the particle picture shown? [7h-69]
1. a mixture of liquids
2. pure liquid
3. pure crystals
4. impure crystals
Which corresponds to the particle picture shown? [7h-70]
1. a pure liquid
2. mixture of liquids
3. pure crystals
4. impure crystals
The process to get pure salt from rock salt is shown in the diagram.
Which of the following would be described a 'sediment'? [7h-71]
1. the evaporating water
2. the crystallising salt
3. the insoluble solids settling out
4. stirred water and fine sand particles
Apparatus number 1 is called a? [7h-72]
1. thermometer
2. magnetic stirrer
3. diddler
4. stirring rod
Apparatus number 2 is called a? [7h-73]
1. beaker
2. conical flask
3. boiling flask
4. evaporating dish
Apparatus number 3 is called a? [7h-74]
1. buchner burner
2. bunsen burner
3. gas burner
4. natural burner
Aapparatus number 4 is called a? [7h-75]
1. filter sieve
2. filter pump
3. filter funnel
4. filteriser
Apparatus number 5 is called a? [7h-76]
1. chromatography paper
2. sieve paper
3. sediment paper
4. filter paper
TApparatus number 6 is called a? [7h-77]
1. evaporating dish
2. boiling basin
3. cooking basin
4. boiling dish
Apparatus number 7 is called a? [7h-78]
1. calibrated beaker
2. measuring cylinder
3. concical cylinder
4. measuring flask
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-79]
1. brown is made of blue, green and yellow colours
2. purple is made of green and red colours
3. blue, red and yellow are each made up of just one colour
4. green is made of blue and red colours
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-80]
1. brown is made of blue, green and yellow colours
2. purple is made of green and red colours
3. blue, green and red are each made up of just one colour
4. green is made of blue and yellow colours
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-81]
1. brown is made of blue, red and yellow colours
2. purple is made of green and red colours
3. blue, green and red are each made up of just one colour
4. green is made of blue and red colours
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-82]
1. brown is made of blue, green and yellow colours
2. purple is made of blue and red colours
3. blue, green and red are each made up of just one colour
4. green is made of blue and red colours
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-83]
1. brown is made of blue and yellow colours
2. purple is made of red and yellow colours
3. brown is made of green and red colours
4. green is made of blue and red colours
The diagram shows the results of a chromatography investigation into the colours extracted from sweets. From the results you can say? [7h-84]
1. brown is made of green and yellow colours
2. purple is made of red and yellow colours
3. green is made of blue and red colours
4. brown is made of purple and yellow colours
Which of these can be described as 'soluble in water'? [7h-85]
1. sugar
2. glass
3. plastic
4. sand
Which of these can be described as 'insoluble in water'? [7h-86]
1. sugar
2. glass
3. salt
4. copper sulphate
At which temperature in ^oC does the solubilty of sodium chloride equal that of potsssium nitrate? [7h-87]
1. 55
2. 20
3. 23
4. 30
At which temperature in ^oC does the solubilty of sodium chloride equal that of copper sulfate? [7h-88]
1. 51
2. 35
3. 23
4. 55
Which of these can make a solid substance dissolve faster in a liquid? [7h-89]
1. heat the solid-liquid mixture
2. use larger lumps of solid in a small volume of liquid
3. let the large undissolved pieces settle out
4. use a little solid at a time to a large volume of liquid
Which of these can make a solid substance dissolve faster in a liquid? [7h-90]
1. cool the solid-liquid mixture
2. use smaller lumps of solid
3. let the large undissolved pieces settle out
4. use a little solid at a time to a large volume of liquid
Which of these can make a solid substance dissolve faster in a liquid? [7h-89]
1. cool the solid-liquid mixture
2. use larger lumps of solid in a small volume of liquid
3. stir the mixture regularly
4. use a little solid at a time to a large volume of liquid
Which of these is NOT a good idea to make a solid substance dissolve faster in a flammable liquid? [7h-92]
1. use a little solid at a time to a large volume of liquid
2. use larger lumps of solid in a small volume of liquid
3. let the large undissolved pieces settle out
4. heat the solid-liquid mixture
What mass of copper sulfate will dissolve in 50g of water at 30^oC ? [7h-93]
1. 12g
2. 24g
3. 48g
4. 6g
What mass of potassium nitrate will dissolve in 200g of water at 20^oC ? [7h-94]
1. 32g
2. 64g
3. 16g
4. 6g
What is the minimum mass of water you can completely dissolve 28g of copper sulfate in at 80^oC ? [7h-95]
1. 100g
2. 200g
3. 50g
4. 25g
What is the minimum mass of water you can completely dissolve 36g of potassium sulfate in at 60^oC ? [7h-95]
1. 100g
2. 25g
3. 50g
4. 200g
Which method shown in the diagram is filtration? [7h-97]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram removes excess liquid? [7h-98]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is distillation? [7h-99]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is chromatography? [7h-100]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is used to separate grit particles from muddy water? [7h-101]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is used to separate copper sulphate crystals from its solution in water? [7h-102]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is used to separate pure water from seawater? [7h-103]
1. method 1
2. method 2
3. method 3
4. method 4
Which method shown in the diagram is used to analyse a forged cheque? [7h-104]
1. method 1
2. method 2
3. method 3
4. method 4
Which is a TRUE statement about water solubility, and purifying rock salt by dissolving, filtering, evaporating and crystallising? [7h-105]
1. most compounds are more soluble at a higher temperature than a lower temperature
2. solubility data for water are given between 0-100^oC because that's the only temperature range we use in laboratory experiments
3. salt particles pass through the filter paper because they are attracted to water molecules
4. one reason why the mass of pure salt crystals obtained is less than the original rock salt is because of losses by evaporation
Which is a TRUE statement about water solubility, and purifying rock salt by dissolving, filtering, evaporating and crystallising? [7h-106]
1. most compounds are less soluble at a higher temperature than a lower temperature
2. solubility data for water are given between 0-100^oC because its limited by the freezing and boiling point of water
3. salt particles pass through the filter paper because they are attracted to water molecules
4. one reason why the mass of pure salt crystals obtained is less than the original rock salt is because of losses by evaporation
Which is a TRUE statement about water solubility, and purifying rock salt by dissolving, filtering, evaporating and crystallising? [7h-107]
1. most compounds are less soluble at a higher temperature than a lower temperature
2. solubility data for water are given between 0-100^oC because that's the only temperature range we use in laboratory experiments
3. salt particles pass through the filter paper because they are so small compared to the pores of the paper
4. one reason why the mass of pure salt crystals obtained is less than the original rock salt is because of losses by evaporation
Which is a TRUE statement about water solubility, and purifying rock salt by dissolving, filtering, evaporating and crystallising? [7h-108]
1. most compounds are less soluble at a higher temperature than a lower temperature
2. solubility data for water are given between 0-100^oC because that's the only temperature range we use in laboratory experiments
3. salt particles pass through the filter paper because they are attracted to water molecules
4. one reason why the mass of pure salt crystals obtained is less than the original rock salt is because of the filtered impurities
Which is a TRUE statement about water solubility, and purifying rock salt by dissolving, filtering, evaporating and crystallising? [7h-109]
1. one reason why the mass of pure salt crystals obtained is less than the original rock salt is because liquid is left in the beaker or on the filter paper
2. solubility data for water are given between 0-100^oC because that's the only temperature range we use in laboratory experiments
3. salt particles pass through the filter paper because they are attracted to water molecules
4. most compounds are less soluble at a higher temperature than a lower temperature
Which statement is TRUE about the distillation process shown in the diagram, to purify water from blue ink? [7h-110]
1. some dissolved salts can distill over
2. the thermometer at Y will register 100^oC
3. the state change at X is called condensation
4. the state change in Z is called evaporation
Which is TRUE about the distillation process shown in the diagram, to purify water from blue ink? [7h-111]
1. some dissolved salts can distill over
2. the thermometer at Y will only register 90^oC
3. the state change at X is called boiling
4. the state change in Z is called evaporation
Which is TRUE about the distillation process shown in the diagram, to purify water from blue ink? [7h-112]
1. some dissolved salts can distill over
2. the thermometer at Y will only register 90^oC
3. the state change at X is called crystallisation
4. the state change in Z is called condensation
Apparatus number 6 is called a? [7h-113]
1. crystallising dish
2. boiling basin
3. cooking basin
4. boiling dish
The process to get pure salt from rock salt is shown in the diagram. Which of the following would be described as the filtrate? [7h-114]
1. pure water
2. clear salt solution
3. pure crystallised salt
4. rock salt particles

KS3 science chemistry practice exam questions KS4 science GCSE/IGCSE chemistry courses AQA Edexcel OCR 21st Century OCR Gateway KS3 sciences for high schools secondary schools colleges private tuition KS3 chemistry tests revision courses US K12 science revision books KS3 science textbooks guidebooks

KS3 Science-Chemistry Quiz on "Particle models of gases, liquids & solids & solutions" (QCA 7G & 7H)

CLICK on [?] read feedback. EMAIL query?comment AND quote Q database number [7g/h-xx] © Doc Brown