1. What ion do all acids release in aqueous solution?

a) Hydroxide ions (OH^-)
b) Hydrogen ions (H⁺)
c) Oxide ions (O^2-)
d) Chloride ions (Cl^-)

2. What is the pH range of a strong acid?

a) 1-3
b) 3-6
c) 7-12
d) 12-14

3. Which acid is found in vinegar?

a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
d) Ethanoic acid

4. The corrosive symbol which is found on concentrated acids and alkalis indicates that it will destroy tissue or cells.

5. The weak acid found in many sour tasting sweets is acid; while the weak acid found in many fizzy drinks is acid, this acid is formed when the gas carbon dioxide dissolves in water.

6. What happens to the hydrogen ion concentration as the pH of a substance decreases?

a) It increases
b) It decreases
c) It stays the same
d) It doubles

7. What is the pH of a neutral substance?

a) 1
b) 14
c) 7
d) 4

8. Which of the following non-metal oxides dissolves in water to form nitric acid?

a) Nitrogen dioxide
b) Nitrogen monoxide
c) Sulfur dioxide
d) Hydrogen chloride

9. Universal indicator will turn when a strong acid such as hydrochloric acid is added to it.

10. What will happen to the pH of an acid if it is diluted by a factor of 10 with water?

a) It doubles
b) Stays the same
c) Increases by 1
d) Decreases by 1