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Doc Brown's Chemistry KS4 science GCSE/IGCSE Practice Revision Questions

Chemical Equation Revision Practice

BALANCING SYMBOL EQUATION QUESTIONS

Part 2a Writing and Balancing Symbol Equation Questions

GCSE/IGCSE KS4 Science-Chemistry examination ('exam') practice questions for the symbol equations for the for the reactions of acids with metals, oxides, hydroxides and carbonates and hydrogencarbonates

1a Word Equation Questions

1b Word Equation Question Answers

2b Symbol Equation Question Answers

Teach yourself to write equations!

GCSE/IGCSE Acids, Bases & Salts Notes * GCSE/IGCSE Multiple Choice BALANCING EQUATION QUIZ

GCSE/IGCSE KS4 Science-CHEMISTRY Revision Questions

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 sulfuric acid makes a ... sulfate (...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..).

'SOME' FORMULA HELP: for MO, M = Mg, Ca, Cu, Zn ;  for MOH, M = Na, K ; for M(OH)₂, M = Mg, Ca, Cu, Zn;

for MCO₃, M = Cu, Zn, Ca, Mg ; for M₂CO₃ M = Na, K  ; and Al₂O₃, Al(OH)₃, AlCl₃, Al₂(SO₄)₃, NH₃, NH₄

and for CH₃COOM where M = Na, K and (CH₃COO)₂M where M = Mg, Ca, Cu, Zn.

1. Mg_(s) +  __________________ ===> MgCl_2(aq) + H_2(g)

2. ZnO_(s) + H₂SO_4(aq) ===>  __________________ + H₂O_(l)

3.  __________________ + 2HNO_3(aq) ===> Ca(NO₃)_2(aq) + H₂O_(l)

4. CuCO_3(s) + H₂SO_4(aq) ===>  __________________ + H₂O_(l) +  __________________

5.  __________________ + 2HCl_(aq) ===> CaCl_2(aq) + 2H₂O_(l)

6. Zn_(s) +  __________________ ===> ZnSO_4(aq) + H_2(g)

7.  __________________ + HNO_3(aq) ===> NH₄NO_3(aq)

8. CuO_(s) + 2HCl_(aq) ===>  __________________ + H₂O_(l)

9.  __________________ + 2HCl_(aq) ===> MgCl_2(aq) + H₂O_(l) +  __________________

10. Mg(OH)_2(s) + H₂SO_4(aq) ===>  __________________ +  __________________

11. CuO_(s) +  __________________ ===> Cu(NO₃)_2(aq) + H₂O_(l)

12. Zn_(s) + 2HCl_(aq) ===> ZnCl_2(aq) + H_2(g)

13.  __________________ + H₂SO_4(aq) ===> MgSO_4(aq) + H₂O_(l)

14.  __________________ + H₂SO_4(aq) ===> MgSO_4(aq) + H₂O_(l) + CO_2(g)

15. Zn(OH)_2(s) + 2HCl_(aq) ===> ZnCl_2(aq) +  __________________

16. Mg_(s) + H₂SO_4(aq) ===>  __________________ +  __________________

17. ZnO_(s) + 2HCl_(aq) ===>  __________________ +  __________________

18. CuCO_3(s) +  __________________ ===> CuCl_2(aq) + H₂O_(l) +  __________________

19.  __________________ + H₂SO_4(aq) ===> CaSO_4(aq) + 2H₂O_(l)

20. 2Al_(s) +  __________________ ===> 2AlCl_3(aq) +  __________________

21. CuO_(s) +  __________________ ===> CuSO_4(aq) + H₂O_(l)

22.  __________________ + H₂SO_4(aq) ===> ZnSO_4(aq)+  __________________ + CO_2(g) 

23. Mg_(s) +  __________________ ===> Mg(NO₃)_2(aq) + H_2(g)

24. __________________ +  __________________ ===> NaCl_(aq) + H₂O_(l)

25.  _Al_(s) +  __________________ ===> Al₂(SO₄)_3(aq) +  3H_2(g)

26. MgO_(s) +  __________________ ===> MgCl_2(aq) + H₂O_(l)

27. Na₂CO_3(aq) +  _HCl_(aq) ===>  ______________ +  ____________ +  ______________

28.  __NaOH_(aq) +  __________________ ===> Na₂SO_4(aq) +  __H₂O_(l)

29. Fe_(s) +  __________________ ===> FeCl_2(aq) +  __________________

30.  _______ + H₂SO_4(aq) ===> FeSO_4(aq) + H_2(g)

31. NH_3(aq) + HNO_3(aq) ===>  __________________

32. Na₂CO_3(aq) + H₂SO_4(aq) ===> Na₂SO_4(aq) +  __________________ +  __________________

33. Zn(OH)_2(s) +  __HCl_(aq) ===>  __________________ +  __H₂O_(l)

34. Mg(OH)_2(s) + 2HCl_(aq) ===> MgCl_2(aq) +  __________________

35. ZnCO_3(s) + 2HCl_(aq) ===>  _______________+  _____________ +  __________

36. NaHCO_3(s) + HCl_(aq) ===>  ______________ +  _______________ +  _______________

37. NH_3(aq) + HCl_(aq) ===>  __________________

38.  __NH_3(aq) +  __________________ ===> (NH₄)₂SO_4(aq)

39.  _CH₃COOH + Ca ===> (CH₃COO)₂Ca +  __

40. CaCO₃ +  _ _______ ===> (CH₃COO)₂Ca +  ___ + CO₂ 

41. NaOH + CH₃COOH ===>  ________ +  _____

42. Mg(OH)₂ + 2CH₃COOH ===>  _________ +  _  _____

Symbol Equation Question Answers

GCSE/IGCSE Acids, Bases & Salts Notes

  GCSE/IGCSE Multiple Choice BALANCING EQUATION QUIZ

Teach yourself to write equations!

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 Revision for KS4 Science IGCSE/O level/GCSE Chemistry Information Study Notes for revising for AQA GCSE Science, Edexcel GCSE Science/IGCSE Chemistry & OCR 21stC Science, OCR Gateway Science, CCEA/CEA GCSE science-chemistry, WJEC GCSE science-chemistry (revise courses equal to US grades 9-10) but even advanced level students need to know the contents of this page. for revising science chemistry courses revision guides

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