1. State the formula for the lead (II) ion

Question 1 of 21

2. What is an alkali compared to a base?

Question 2 of 21

3. What is the test for iron (II) ions (Fe²⁺) and what is the result?

Question 3 of 21

4. What is an acid?

Question 4 of 21

5. What method would be followed to prepare a sample of pure, dry lead (II) sulfate?

Question 5 of 21

6. 7.485 g of a hydrated copper(II) sulphate CuSO₄.xH₂O was heated producing 4.785g of anhydrous copper(II) sulphate. What is the formula of the hydrated salt?

Question 6 of 21

7. Is sodium hydroxide soluble?

Question 7 of 21

8. A pure, dry sample of an insoluble salt can be prepared starting with two soluble reactants. What is this method called?

Question 8 of 21

9. How are sodium ions identified, and what is the result?

Question 9 of 21

10. What is defined as a proton acceptor?

Question 10 of 21

11. In a flame test, why is hydrochloric acid used?

Question 11 of 21

12. Can a base neutralise an acid?

Question 12 of 21

13. nitric acid + calcium carbonate →

Question 13 of 21

14. When preparing hydrated copper(II) sulfate crystals starting from copper(II) oxide, why is an excess of copper (II) oxide added?

Question 14 of 21

15. A pure, dry sample of a soluble salt can be prepared starting with an insoluble reactant. What is this method called?

Question 15 of 21

16. An acid is called a proton _________

Question 16 of 21

17. What 2 things are added to a solution to test for chloride ions? What is observed if they are present?

Question 17 of 21

18. What is the pH of a strong acid?

Question 18 of 21

19. What is the universal indicator colour of a strongly alkali solution?

Question 19 of 21

20. Which gas will bleach moist litmus paper?

Question 20 of 21

21. A pure, dry sample of a soluble salt can be prepared starting from an acid and alkali. What are the two stages of this method called?

Question 21 of 21


 

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