1# Chemistry - Term 4 Summary 2 3## Precipitation reactions 4 5- water cannot dissociate ionic lattice structure (e.g. NaCl and other salts) 6- aqueous ions combine to form a new compound 7- occurs when concentration exceeds solubility (precipitate = insoluble solid) 8- all group 1 ions are soluble 9 10e.g. NaCl(aq) + AgNO3(aq) -> NaNO3(aq) + AgCl(s) 11 12 13 14## Acids and bases 15 16## pH scale 17 18## Redox reactions 19 20Electrochemical series - higher equations are more likely to occur