Site Meter * Do online OR printout, do, return to check answers. * GCSE Notes on the Periodic Table * AQA * CCEA * Edexcel * OCR 21stC * OCR Gateway * WJEC * EMAIL comment?query * Doc Brown's Chemistry Clinic updated 10-06-09 *

   alkali      atomic      boiling      brittle      catalysts      coloured      covalent      densities      diatomic      floats      gases      groups      halide      halogens      heat      high      higher      hydrogen      hydroxide      inert      ionic      left      less      liquid      low      lower      mass      mercury      metals      more      nitrogen      noble      non-metals      periods      poor      right      shiny      similar      single      transition      unreactive   
(a) The chemical elements in the Periodic Table were originally arranged in order of the atomic .
(b) This list can then be arranged in rows so that elements with properties are in the same columns, known as .
(c) The complete horizontal rows of disimilar elements are called .
(d) In the modern periodic table elements are arranged in order of their number or proton number.

(a) The elements in Group 1 of the periodic table are known as because they form hydroxides which dissolve in water to give alkaline solutions.
(b) They react with to form ionic compounds in which the metal ion carries a positive charge.
(c) In Group 1, the further down the group an element is - the reactive the element; the its melting point and boiling point.
(d) When a piece of lithium, sodium or potassium is placed in cold water the metal , and may melt and move around the surface of the water with fast fizzing!
(e) The metal reacts with the water to form a metal solution and gas.

(a) Fewer than one quarter of the elements are and can be gases, liquids or solids.
(b) Non-metal elements are found in the Groups at the hand side of the periodic table.
(c) The elements in Group 7 and Group 0 have the typical properties of non-metals - they have melting points and boiling points (at room temperature all the Group 0 elements are ).
(b) The solids tend to be dull in appearance and are conductors of heat and electricity.
(c) In contrast the boiling points, melting points and densities of metals tend to be relatively .

(a) The Group 7 elements are called the The first two are and the third, bromine, is a ).
(b) Iodine is and crumbly when solid and is a poor conductors of and electricity.
(c) These elements have vapours and consist of diatomic molecules which are made up of two atoms.
(d) They form salts with metals in which the chloride, bromide or iodine ion ( ions).
(e) They form molecular compounds with other non-metallic elements.
(f) In Group 7, the further down the group the element is - the reactive the element; the its melting point and boiling point.
(g) A reactive halogen can displace a reactive halogen from an aqueous solution of its salt.

(a) The elements in Group 0 are called the .
(b) They are all chemically very gases and exist as atoms rather than as gas molecules like other gaseous elements such as oxygen or .
(c) They are used as gases in filament lamps and in electrical discharge tubes.
(d) The first element in the Group, helium, is much dense than air and is used in balloons.

(a) More than three-quarters of the elements of the periodic table are .
(b) They are mainly found in the hand columns (Group 1 and Group 2) and in the central blocks.
(c) In the middle of the Periodic Table are horizontal blocks called the which are typically strong, , and have melting and points and .
(d) The metals or their compounds can act as and many of their compounds are highly .
(e) All are solid at room temperature and pressure except which is a .
(f) Metals are good conductors of and electricity.