1) What is Universal Indicator (UI) used for? a) To test how reactive something is b) To see if calcium is present c) To test the pH of a solution d) To test for a gas 2) What colour does Universal Indicator go in a strong acid? a) Green b) Purple c) Blue d) Red 3) Which of these words means the same thing as "alkali"? a) Base b) Neutral c) Indicator d) Acidic 4) Lemon juice is an acid. What is the most likely pH of lemon juice? a) 9 b) 7 c) 2 d) 14 5) What does this colour tell you about the substance being tested with Universal Indicator? a) It is an alkali b) It has a low pH c) It is a weak acid d) It is neutral 6) What sort of reaction happens when an acid is added to a base? a) Oxidation b) Neutralisation c) Reduction d) Thermal decomposition 7) Which of these substances is sulphuric acid? a) HCl b) HNO3 c) HPO4 d) H2SO4 8) What is produced if sulphuric acid is reacted with sodium hydroxide, an alkali? a) A salt and hydrogen b) Sulphur and sodium c) Water and a salt d) Water and hydrogen 9) What is the formula for magnesium hydroxide? a) MgCO3 b) MgCl2 c) MgO d) MgOH 10) What are the products of a reaction between magnesium hydroxide and hydrochloric acid? a) Magnesium chloride + hydrogen b) Magnesium oxide + chlorine c) Magnesium oxide + water d) Magnesium chloride + water

Acid Chemistry Re-cap

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