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

Chemical Equation Revision Practice - Balanced SYMBOL EQUATIONS

Part 2b Writing and balancing symbol equation Question ANSWERS

The answers to the GCSE/IGCSE KS4 Science-Chemistry practice questions for the symbol equations for the reactions of acids with metals, oxides, hydroxides and carbonates and hydrogencarbonates

1a Word Equation Questions * 1b Word Equation Question Answers * 2a Symbol Equation Questions

(c) doc b Teach yourself to write equations!

(c) doc b 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)


2b SYMBOL EQUATION QUESTION ANSWERS

1. Mg(s) + 2HCl(aq) ===> MgCl2(aq) + H2(g)

2. ZnO(s) + H2SO4(aq) ===> ZnSO4(aq) + H2O(l)

3. CaO(s) + 2HNO3(aq) ===> Ca(NO3)2(aq) + H2O(l)

4. CuCO3(s) + H2SO4(aq) ===> CuSO4(aq) + H2O(l) + CO2(g)

5. Ca(OH)2(s) + 2HCl(aq) ===> CaCl2(aq) + 2H2O(l)

6. Zn(s) + H2SO4(aq) ===> ZnSO4(aq) + H2(g)

7. NH3(aq) + HNO3(aq) ===> NH4NO3(aq)

8. CuO(s) + 2HCl(aq) ===> CuCl2(aq) + H2O(l)

9. MgCO3(s) + 2HCl(aq) ===> MgCl2(aq) + H2O(l) + CO2(g)

10. Mg(OH)2(s) + H2SO4(aq) ===> MgSO4(aq) + 2H2O(l)

11. CuO(s) + 2HNO3(aq) ==> Cu(NO3)2(aq) + H2O(l)

12. Zn(s) + 2HCl(aq) ===> ZnCl2(aq) + H2(g)

13. MgO(s) + H2SO4(aq) ===> MgSO4(aq) + H2O(l)

14. MgCO3(s) + H2SO4(aq) ===>MgSO4(aq) + H2O(l) + CO2(g)

15. Zn(OH)2(s) + 2HCl(aq) ===> ZnCl2(aq) + 2H2O(l)

16. Mg(s) + H2SO4(aq) ===> MgSO4(aq) + H2(g)

17. ZnO(s) + 2HCl(aq) ===> ZnCl2(aq) + H2O(l)

18. CuCO3(s) + 2HCl(aq) ===> CuCl2(aq) + H2O(l) + CO2(g)

19. Ca(OH)2(s) + H2SO4(aq) ===> CaSO4(aq) + 2H2O(l)

20. 2Al(s) + 6HCl(aq) ===> 2AlCl3(aq) + 3H2(g)

21. CuO(s) + H2SO4(aq) ===> CuSO4(aq) + H2O(l)

22. ZnCO3(s) + H2SO4(aq) ===> ZnSO4(aq)+ H2O(l) + CO2(g) 

23. Mg(s) + 2HNO3(aq) ===> Mg(NO3)2(aq) + H2(g)

24. NaOH(aq) + HCl(aq) ===> NaCl(aq) + H2O(l)

25. 2Al(s) + 3H2SO4(aq) ===> Al2(SO4)3(aq) +  3H2(g)

26. MgO(s) + 2HCl(aq) ===> MgCl2(aq) + H2O(l)

27. Na2CO3(aq) + 2HCl(aq) ===> 2NaCl(aq) + H2O(l) + CO2(g)

28. 2NaOH(aq) + H2SO4(aq) ===> Na2SO4(aq) + 2H2O(l)

29. Fe(s) + 2HCl(aq) ===> FeCl2(aq) + H2(g)

30. Fe(s) + H2SO4(aq) ===> FeSO4(aq) + H2(g)

31. NH3(aq) + HNO3(aq) ===> NH4NO3(aq)

32. Na2CO3(aq) + H2SO4(aq) ===> Na2SO4(aq) + H2O(l) + CO2(g)

33. Zn(OH)2(s) + 2HCl(aq) ===> ZnCl2(aq) + 2H2O(l)

34. Mg(OH)2(s) + 2HCl(aq) ===> MgCl2(aq) + 2H2O(l)

35. ZnCO3(s) + 2HCl(aq) ===> ZnCl2(aq)+ H2O(l) + CO2(g)

36. NaHCO3(s) + HCl(aq) ===> NaCl(aq) + H2O(l) + CO2(g)

37. NH3(aq) + HCl(aq) ===> NH4Cl(aq)

38. 2NH3(aq) + H2SO4(aq) ===> (NH4)2SO4(aq)

39. 2CH3COOH + Ca ===> (CH3COO)2Ca + H2

40. CaCO3 + 2CH3COOH ===> (CH3COO)2Ca + H2O + CO2 

41. NaOH + CH3COOH ===> CH3COONa + H2O

42. Mg(OH)2 + 2CH3COOH ===> (CH3COO)2Mg + 2H2O


Keywords-phrases: balanced symbol equations 1. Mg(s) + 2HCl(aq) ===> MgCl2(aq) + H2(g) 2. ZnO(s) + H2SO4(aq) ===> ZnSO4(aq) + H2O(l) 3. CaO(s) + 2HNO3(aq) ===> Ca(NO3)2(aq) + H2O(l) 4. CuCO3(s) + H2SO4(aq) ===> CuSO4(aq) + H2O(l) + CO2(g) 5. Ca(OH)2(s) + 2HCl(aq) ===> CaCl2(aq) + 2H2O(l) 6. Zn(s) + H2SO4(aq) ===> ZnSO4(aq) + H2(g) 7. NH3(aq) + HNO3(aq) ===> NH4NO3(aq) 8. CuO(s) + 2HCl(aq) ===> CuCl2(aq) + H2O(l) 9. MgCO3(s) + 2HCl(aq) ===> MgCl2(aq) + H2O(l) + CO2(g) 10. Mg(OH)2(s) + H2SO4(aq) ===> MgSO4(aq) + 2H2O(l) 11. CuO(s) + 2HNO3(aq) ==> Cu(NO3)2(aq) + H2O(l) 12. Zn(s) + 2HCl(aq) ===> ZnCl2(aq) + H2(g) 13. MgO(s) + H2SO4(aq) ===> MgSO4(aq) + H2O(l) 14. MgCO3(s) + H2SO4(aq) ===>MgSO4(aq) + H2O(l) + CO2(g) 15. Zn(OH)2(s) + 2HCl(aq) ===> ZnCl2(aq) + 2H2O(l) 16. Mg(s) + H2SO4(aq) ===> MgSO4(aq) + H2(g) 17. ZnO(s) + 2HCl(aq) ===> ZnCl2(aq) + H2O(l) 18. CuCO3(s) + 2HCl(aq) ===> CuCl2(aq) + H2O(l) + CO2(g) 19. Ca(OH)2(s) + H2SO4(aq) ===> CaSO4(aq) + 2H2O(l) 20. 2Al(s) + 6HCl(aq) ===> 2AlCl3(aq) + 3H2(g) 21. CuO(s) + H2SO4(aq) ===> CuSO4(aq) + H2O(l) 22. ZnCO3(s) + H2SO4(aq) ===> ZnSO4(aq)+ H2O(l) + CO2(g)  23. Mg(s) + 2HNO3(aq) ===> Mg(NO3)2(aq) + H2(g) 24. NaOH(aq) + HCl(aq) ===> NaCl(aq) + H2O(l) 25. 2Al(s) + 3H2SO4(aq) ===> Al2(SO4)3(aq) +  3H2(g) 26. MgO(s) + 2HCl(aq) ===> MgCl2(aq) + H2O(l) 27. Na2CO3(aq) + 2HCl(aq) ===> 2NaCl(aq) + H2O(l) + CO2(g) 28. 2NaOH(aq) + H2SO4(aq) ===> Na2SO4(aq) + 2H2O(l) 29. Fe(s) + 2HCl(aq) ===> FeCl2(aq) + H2(g) 30. Fe(s) + H2SO4(aq) ===> FeSO4(aq) + H2(g) 31. NH3(aq) + HNO3(aq) ===> NH4NO3(aq) 32. Na2CO3(aq) + H2SO4(aq) ===> Na2SO4(aq) + H2O(l) + CO2(g) 33. Zn(OH)2(s) + 2HCl(aq) ===> ZnCl2(aq) + 2H2O(l) 34. Mg(OH)2(s) + 2HCl(aq) ===> MgCl2(aq) + 2H2O(l) 35. ZnCO3(s) + 2HCl(aq) ===> ZnCl2(aq)+ H2O(l) + CO2(g) 36. NaHCO3(s) + HCl(aq) ===> NaCl(aq) + H2O(l) + CO2(g) 37. NH3(aq) + HCl(aq) ===> NH4Cl(aq) 38. 2NH3(aq) + H2SO4(aq) ===> (NH4)2SO4(aq) 39. 2CH3COOH + Ca ===> (CH3COO)2Ca + H2 40. CaCO3 + 2CH3COOH ===> (CH3COO)2Ca + H2O + CO2  41. NaOH + CH3COOH ===> CH3COONa + H2O 42. Mg(OH)2 + 2CH3COOH ===> (CH3COO)2Mg + 2H2O

Original Symbol Equation Questions

(c) doc b GCSE/IGCSE Acids, Bases & Salts Notes * GCSE/IGCSE Multiple Choice BALANCING EQUATION QUIZ

(c) doc b 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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