Knowledge Organiser – Formulae and equations

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Presentation transcript:

Knowledge Organiser – Formulae and equations Key Terms Knowledge Organiser – Formulae and equations Diagrams Diatomic molecule A molecule containing two atoms Spectator ions Ions that do not take part in a reaction and do not appear in the ionic equation for the reaction Ionic equation Balanced equation for reaction that omits any spectator ions Common Reactions Element + oxygen -> oxide of element Eg Calcium + oxygen -> calcium oxide Compound + oxygen -> oxides of each element in compound Eg Methane + oxygen -> carbon dioxide + water Water + metal -> metal hydroxide + hydrogen (for metals that react with water) Eg water + sodium -> sodium hydroxide + hydrogen Acid + metal -> salt + hydrogen Eg Hydrochloric acid + magnesium -> magnesium chloride + hydrogen Acid + metal oxide -> salt + water Eg Sulphuric acid + copper oxide -> copper sulphide + water Acid + metal hydroxide -> salt + water Eg nitric acid + potassium hydroxide -> potassium nitrate + water Acid + metal carbonate -> salt + water + carbon dioxide Eg hydrochloric acid + calcium carbonate -> calcium chloride + water + carbon dioxide Acid + ammonia -> ammonium salt Eg nitric acid + ammonia -> ammonium nitrate