1. Describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from two soluble reactants

Question 1 of 21

2. Describe how you would carry out a flame test

Question 2 of 21

3. 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 3 of 21

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

Question 4 of 21

5. State the formula for the iron (III) ion

Question 5 of 21

6. Can a base neutralise an acid?

Question 6 of 21

7. Work out the empirical formula of an oxide of chlorine contains 7.1 g of chlorine and 1.6 g of oxygen.

Question 7 of 21

8. In the test of a gas, a glowing splint relights. What is the gas?

Question 8 of 21

9. What is an alkali?

Question 9 of 21

10. What is the universal indicator colour of a strongly acid solution?

Question 10 of 21

11. When preparing hydrated copper(II) sulfate crystals starting from copper(II) oxide, why is the acid gently heated?

Question 11 of 21

12. With universal indicator, what is the pH of a blue solution?

Question 12 of 21

13. hydrochloric acid + sodium hydroxide →

Question 13 of 21

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

Question 14 of 21

15. An acid is called a proton _________

Question 15 of 21

16. Is ammonia acidic or basic?

Question 16 of 21

17. Is aluminium nitrate soluble?

Question 17 of 21

18. What is defined as a proton donor?

Question 18 of 21

19. In a flame test, a red colour is seen. Give the formula of the cation which is present.

Question 19 of 21

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

Question 20 of 21

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

Question 21 of 21


 

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