1. What is the universal indicator colour of a pH 7 (neutral) solution?

Question 1 of 21

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

Question 2 of 21

3. Is silver sulfate soluble?

Question 3 of 21

4. Give the name of the brown precipitate formed when sodium hydroxide is added to a solution containing Fe³⁺

Question 4 of 21

5. Write the word equation to represent the reaction between copper oxide and sulfuric acid

Question 5 of 21

6. With universal indicator, what is the pH of a red solution?

Question 6 of 21

7. State the formula of the carbonate ion

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. Describe how you would carry out a flame test

Question 9 of 21

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

Question 10 of 21

11. 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 11 of 21

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

Question 12 of 21

13. What is defined as a proton donor?

Question 13 of 21

14. 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 14 of 21

15. An alkali is called a proton _________

Question 15 of 21

16. When testing for halide or sulfate ions, why is acid added added first?

Question 16 of 21

17. What is a base?

Question 17 of 21

18. Is magnesium oxide acidic or basic?

Question 18 of 21

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

Question 19 of 21

20. Describe the test for carbon dioxide gas

Question 20 of 21

21. What is an acid?

Question 21 of 21


 

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