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

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

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3. In the flame test for copper (II) ions what colour is the result?

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4. Write a word equation for the reaction between sodium hydroxide and iron(II) sulfate

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

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6. Is lead sulfate soluble?

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7. What two observations can be made when a metal reacts with an acid?

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

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9. What is defined as a proton donor?

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10. Describe the test for oxygen gas

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

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12. An alkali is called a proton _________

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13. What is a base?

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

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

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16. Nitric acid and silver nitrate are added to a solution containing chloride ions. Describe the result.

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17. Is iron (III) hydroxide acidic or basic?

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

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19. What is an alkali?

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20. State the steps for calculating empirical formula

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

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