• Acids and alkalis
  • Burning magnesium
  • Effects of heat on a chemical
  • Elements and Compounds
  • Investigations and apparatus
  • Properties of materials.
  • Separating mixtures solutions
  • The air and Earth
  • Useful reactions and equations
  • Solids – Liquids – Gases

Acids and alkalis

1. An acid would have what pH number?
 
 
 

2. A liquid with a pH of 7 would be described as …..
 
 
 
 

3. If Magnesium hydroxide (indigestion powder) were added to vinegar which of the answers would best describe what would happen?
 
 
 
 

4. If a gardener wished to make his soil less acid, which of the following would be the best to do?
 
 
 
 

5. What colour will universal turn when mixed with vinegar?
 
 
 
 

6. Name a substance with a pH value less than pH7
 
 
 
 

7. Complete the word equation:
Hydrochloric acid + sodium hydroxide      ?
 
 
 
 

8. Citric acid would be found in which house-hold substance?
 
 
 
 

9. Pick an alkaline oxide from the list
 
 
 
 

10. What is the pH value of pure water?
 
 
 
 

11. What type of acid is often put in car batteries?
 
 
 

12. What type of acid is found in your stomach?
 
 
 

13. What gas is produced when acids react with a metal?
 
 
 
 

14. What colour would Universal Indcator turn when added to a strong acid?
 
 
 
 

15. What colour would Universal Indcator turn when added to a mild alkali?
 
 
 
 

16. What colour would Universal Indcator turn when added to a neutral liquid?
 
 
 
 

17. What colour would Universal Indcator turn when added to a strong alkali?
 
 
 
 

18. What colour would Universal Indcator turn when added to a weak acid?
 
 
 
 

19. Word equations for 4 different reactions are shown.
Which of them is an example of a neutralization reaction?
 
 
 
 

20. A liquid with a pH of 9 would be described as …..
 
 
 
 

21. A liquid with a pH of 2 would be described as …..
 
 
 
 

22. A liquid with a pH of 6 would be described as …..
 
 
 
 

23. Which would be the best substance to neutralize some spilt hydrochloric acid?
 
 
 
 

24. What gas is produced when zinc is added to dilute sulphuric acid?
 
 
 
 

25. What gas is produced when calcium carbonate is added to dilute hydrochloric acid?
 
 
 
 

26. Exactly enough sodium hydroxide solution is added to hydrochloric acid to make a neutral solution.
How can salt (sodium chloride crystals) be obtained from the resulting solution?
 
 
 
 

27. What colour will universal turn when mixed with indigestion mixture?
 
 
 
 

28. What colour will universal turn when mixed with limewater?
 
 
 
 

29. What colour will universal turn when mixed with water?
 
 
 
 

30. What colour will universal turn when mixed with hydrochloric acid?
 
 
 
 

31. Name a substance with a pH value more than pH7
 
 
 
 

32. Name a substance with a pH value equal to pH7
 
 
 
 

33. Name a neutral liquid
 
 
 
 

34. Pick a liquid that is a weak acid
 
 
 
 

35. Pick a liquid that is a mild alkali
 
 
 
 

36. Pick an acidic oxide from the list
 
 
 
 

37. Pick an neutral oxide from the list
 
 
 
 

38. Fill in the missing word from the equation shown below:
Acid + alkali     →    …………    +   water
 
 
 
 

39. Fill in the missing word from the equation shown below:
Acid + metal    →  salt   +   …………
 
 
 
 

40. Four different substances are added to dilute sulphuric acid
Which of the substances would produce no reaction?
 
 
 
 


 

Elias mussa
Elias mussa

It is a good way on learning

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