2nd Year Science Assessment (Ms. Burns)

1. Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

2. Milk is a very weak acid. What might its pH value be?

• 6.5

• 7.8

• 4.2

• 12.2

3. When an acid is dissolved in water, it turns red litmus paper blue.

• True

• False

4. Which of the following is an acid?

• Vinegar

• Bleach

• Sugar in water

• Starch in water

• Toothpaste in water

5. All bases have a sour taste

• True

• False

6. The strongest bases have pH values close to

• 0

• 14

• 7

• 5

7. Which of the following is a base?

• Orange

• Vinegar

• Baking soda

• Lemonade

8. If the substance is neutral, what would the pH be?

• 3

• 5

• 7

• 9

• 11

9. Which of the following is most likely to be basic:

• Coke

• Lemon juice

• Laundry detergent

• Vinegar

10. Complete the word equation below:

Acid + alkali --> ............... + water

• Water

• Gold

• Metal

• Salt