Acids and Alkalis Worksheet

Name:

Date:

📚 Part 1: Multiple Choice & Quick Checks

1. Which of the following is an acid?

Lemon juice

Soap solution

Distilled water

2. Litmus paper turns __________ in an acidic solution.

Blue

Red

Green

3. Check all that apply: Common properties of alkalis

Slippery to the touch

Sour taste

Turns blue litmus red

Contains OH⁻ ions

4. Which pH value is neutral?

✏️ Part 2: Short Answers, Matching & Practical

5. Fill in the blank: An acid typically has a pH of __________ and produces _________ ions in water.

6. Match each substance to whether it is an acid, an alkali or neutral. Draw lines to match.

A. Vinegar

B. Toothpaste

C. Distilled water

D. Sodium hydroxide (NaOH)

E. Orange juice

1. Acid

2. Alkali

3. Neutral

7. Practical: You add universal indicator to a solution and it turns purple. Is the solution acidic, neutral or alkaline? Explain your answer briefly.

8. Safety: List two safety precautions to follow when handling acids in the laboratory.

9. Draw and label a simple pH scale from 0 to 14. Mark which region is acidic, neutral and alkaline, and place: lemon juice (≈ pH 2), milk (≈ pH 6.5) and bleach (≈ pH 12).