Work Out Chemistry GCSE

Part 1 Some simple ideas: elements, compounds and mixtures; symbols; chemical changes and changes of state; the separation of mixtures; tests for purity. Part 2 Atoms and molecules: the states of matter; diffusion; atomic stucture; radioactivity. Part 3 The periodic table: the noble gases; trends in properties going across a period; trends in properties going down a group; the transition elements. Part 4 Bonding and structure: crystal structure; oxidation and reduction. Part 5 Moles, formulae and equations: gas volumes; chemical equations; ionic equations; calculating reacting masses from equations. Part 6 Electrochemistry: electrolysis. Part 7 Energy changes in chemistry: electrical cells; light energy in chemistry. Part 8 Rate of reaction: reversible reactions. Part 9 Atmosphere and combustion; separating the gases in the air; processes which use up oxygen; photosynthesis. Part 10 Water and hydrogen: water as a solvent; water supplies; hydrogen. Part 11 Acids, bases and salts: acids; bases and alkalis; strengths of acids and bases; salts. Part 12 The metals: potassium, sodium and lithium - the alkali metals; calcium and magnesium - the alkaline earth metals; aluminium; iron; differences between metals and non-metals. Part 13 Carbon: carbon dioxide; carbonates; the carbon cycle; carbon monoxide. Part 14 Nitrogen: nitrogen; the oxides of nitrogen; ammonia; ammonium salts; nitric acid; nitrates; the nitrogen cycle.