1. State the colour of methyl orange in acidic and alkaline solutions

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2. What is the pH of a strong alkali?

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3. What is the universal indicator colour of a pH 8-10 solution?

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4. What is an acid?

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5. Describe the test for hydrogen gas

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6. Are metal oxides acidic or basic?

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7. If copper chloride has the formula CuCl₂, what is the formula of the copper ion?

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8. Are carbon dioxide and sulfur dioxide acidic or basic?

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9. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)

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10. Is magnesium oxide acidic or basic?

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11. What is a base?

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12. How can metal carbonates be used to produce carbon dioxide?

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13. What is the formula for aluminium sulfide?

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14. hydrochloric acid + magnesium →

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