1. What is the pH of a strong acid?

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2. Is ammonia acidic or basic?

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3. An alkali is called a proton _________

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4. What is defined as a proton acceptor?

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5. Give the formula of sulfuric acid

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6. Can a base neutralise an acid?

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7. If nitric acid (HNO₃) produces H⁺ ions, what is formula for the other ion?

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8. Is potassium sulfate soluble?

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9. Describe how you would carry out a flame test

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10. Describe the method to prepare a pure dry sample of copper sulfate (soluble salt)

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

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12. Describe the test for hydrogen gas

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13. When NaOH is added to a sample, the resultant gas turns damp red litmus paper blue. What cation was present in the sample?

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14. Describe the method to prepare a pure dry sample of sodium chloride (soluble salt)

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

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16. What is the empirical formula of a compound in which 0.48 g of carbon combines with 0.08 g of hydrogen and 0.64 g of oxygen?

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

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18. What is an acid?

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19. When testing a sample for ions, hydrochloric acid and then barium chloride are added to a sample. A white precipitate forms. What is the name of that precipitate?

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20. What is the universal indicator colour of a weakly alkali solution?

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

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