1. The term 'acid' was gotten from which of the following?

• A. Al-qality

• B. Atoma

• C. Acidus

• D. Neutral

2. Which of the following correctly describes an indicator?

• A. The smallest particle of a substance that can take part in a chemical reaction

• B. A soluble base

• C. A measure of the hydrogen ion concentration of a solution

• D. A substance that produces different colours when added to different solutions

3. Which of the following is NOT an alkali?

• A. Sodium hydroxide

• B. Magnesium hydroxide

• C. Potassium hydroxide

• D. Calcium hydroxide

4. The products gotten when an acid reacts with a base are

• A. hydrogen and oxygen

• B. salt and water

• C. carbon and carbon dioxide

• D. carbon dioxide and water

5. A reaction between an acid and a base is called

• A. neutralization

• B. hydrogenation

• C. acidification

• D. crystallization

6. Any soluble base is called a/an

• A. proton

• B. acid

• C. alkali

• D. neutron

7. A solution whose pH value is 3 is most likely a/an

• A. acid

• B. base

• C. alkali

• D. neutral solution

8. What is the colour of methyl orange in an alkaline solution?

• A. Orange

• B. Pink

• C. Red

• D. Yellow

9. What is the colour of Phenolphthalein in a neutral solution?

• A. colourless

• B. Pink

• C. Purple

• D. Yellow

10. The products gotten when an acid reacts with a carbonate are

• A. a salt and a base

• B. hydrogen, carbon dioxide, and water

• C. a salt, water, and carbon dioxide

• D. carbon, oxygen, and hydrogen