* GCSE Chemical Equation Revision Practice - writing word equations & balancing symbol equations *
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Doc Brown's Chemistry Chemical Equation Revision Practice - Part 1a Writing Word Equation Questions for the reactions of acids with metals, oxides, hydroxides and carbonates and hydrogen carbonates Revision KS4 Science IGCSE/O level/GCSE Chemistry Information Study Notes for revising for AQA GCSE Science, Edexcel 360Science/IGCSE Chemistry & OCR 21stC Science, OCR Gateway Science (revise courses equal to US grades 9-10) 1b Word Equation Question Answers * 2a Symbol Equation Questions * 2b Symbol Equation Question Answers Acids, Bases & Salts Notes * Multiple Choice BALANCING EQUATION QUIZ GCSE/IGCSE KS4 Science-CHEMISTRY Revision Questions * EMAIL query?comment Spelling note: sulphuric acid = sulfuric acid, sulphate = sulfate, aluminium = aluminum (US) You must know four general word equations, all of which involve neutralisation (Foundation or Higher students) and higher students would be expected to write and interpret them as symbol equations too. (i) is also a redox reaction. (i) metal + acid ==> a salt + hydrogen (ii) basic oxide or hydroxide + acid ==> a salt + water (iii) carbonate + acid ==> a salt + water + carbon dioxide (iv) ammonia + acid ==> ammonium salt (note: no water formed, but ammonia (NH3) is an alkaline gas and soluble in water and neutralised by acids to form ammonium salts (NH4 ...) The name of the salt depends on (i) the metal name, which becomes the first part of salt name, and (ii) the acid e.g. H2SO4 sulphuric acid makes a ... sulphate (...SO4), HCl hydrochloric acid makes a ... chloride (...Cl), HNO3 nitric acid makes a … nitrate (...NO3) and CH3COOH ethanoic acid makes an ethanoate (...OOCCH3 or CH3COO..). 1a WORD EQUATION QUESTIONS (you might have to fit two words in a line space) 1. zinc + hydrochloric acid ===> ?___________________________ + hydrogen 2. ?_______________________ + sulphuric acid ===> copper(II) sulphate + water + carbon dioxide 3. magnesium oxide + ?___________________________ ===> magnesium nitrate + water 4. zinc + sulphuric acid ===> zinc sulphate + ?___________________________ 5. magnesium hydroxide + hydrochloric acid ===> ?___________________________ + water 6. ?__________________ + nitric acid ===> copper(II) nitrate + water + ?__________________ 7. zinc carbonate + sulphuric acid ===> ?______________ + ?____________ + carbon dioxide 8. iron + ?___________________________ ===> iron(II) chloride + hydrogen 9. magnesium oxide + hydrochloric acid ===> ?____________________ + ?________________ 10. ?_________________ + hydrochloric acid ===> calcium chloride + water + ?__________________ 11. ?___________________________ + sulphuric acid ===> magnesium sulphate + hydrogen 12. magnesium + nitric acid ===> ?___________________________ + hydrogen 13. zinc hydroxide + ?___________________________ ===> zinc chloride + water 14. ?____________________ + hydrochloric acid ===> magnesium chloride + water + carbon dioxide 15. aluminium + hydrochloric acid ===> ?___________________________ + hydrogen 16. sodium hydroxide + hydrochloric acid ===> ?_______________________ + ?________________ 17. sodium carbonate + ?_________________ ===> sodium sulphate + water + ?________________ 18. ?___________________________ + nitric acid ===> calcium nitrate + water + carbon dioxide 19. ?___________________________ + sulphuric acid ===> iron(II) sulphate + hydrogen 20. zinc oxide + ?___________________________ ===> zinc chloride + water 21. copper(II) carbonate + sulphuric acid ===> ?_____________________ + water + carbon dioxide 22. aluminium + ?___________________________ ===> aluminium sulphate + hydrogen 23. calcium oxide + hydrochloric acid ===> ?______________________ + ?_________________ 24. magnesium hydroxide + ?________________ ===> magnesium sulphate + ?________________ 25. ammonia + sulphuric acid ===> ?___________________________ 26. ammonia + ?___________________________ ===> ammonium chloride 27. zinc hydroxide + sulphuric acid ===> ?_____________________ + ?______________ 28. copper(II) oxide + hydrochloric acid ===> ?___________________________ + water 29. sodium hydroxide + sulphuric acid ===> ?___________________________ + water 30. sodium hydrogencarbonate + hydrochloric acid ===> ?________________ + ?_________________ + ?________________ 31. ammonia + ?___________________________ ===> ammonium nitrate 32. calcium oxide + ?_____________________ ===> calcium chloride + ?_____________________ 33. aluminium hydroxide + nitric acid ===> ?___________________________ + water 34. calcium carbonate + ?________________ ===> calcium ethanoate + ?____________ + ?________________ 35. ethanoic acid + magnesium ===> ?____________________ + hydrogen 36. _________________ + magnesium oxide ===> magnesium ethanoate + ?____________ 37. sodium hydroxide + ?_______________ ===> ?_____ ethanoate + ?_____________ Word Equation Question Answers Chemical equations are an important part of the 'language' of chemistry and will form part of many chemistry lessons planned by your teacher, so get used to them and know how to write them as an important part of revising for KS4 Science-CHEMISTRY examinations. |
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