C4: Chemical Changes 0.0 / 5 ? ChemistryChemical patterns and reactivity seriesGCSEAQA Created by: studybuddy1101Created on: 30-01-19 19:43 What ions do acids form in water H+ 1 of 16 What ions do bases form in alkalis OH- 2 of 16 A strong acid ionises completely in an aqueous solution 3 of 16 a weak acid ionises partially in aqueous solution 4 of 16 Ph is a measure of concentration of OH- ions false, its a measure of H+ ions 5 of 16 Oxidation the gain of oxygen 6 of 16 Reduction loss of oxygen 7 of 16 Oxidation loss of electrons 8 of 16 Reduction gain of electrons 9 of 16 in a displacement reaction a ---- reactive metal displaces a ---- reactive metal more,less 10 of 16 acid + metal oxide make salt + water 11 of 16 Acid + metal carbonate makes salt + water + carbon dioxide 12 of 16 metal + water makes metal hydroxide + hydrogen 13 of 16 Litmus paper goes red in acid. blue in alkali 14 of 16 methyl orange goes red in acid. yellow in alkali 15 of 16 phenolphthalein goes colourless in acid. pink in alkali 16 of 16
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