Acids and Bases

Which of these pH values represent an acid?

• 7

• 4

• 8

• 14

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

• 6.5

• 7.8

• 4.2

• 12.2

An acid turns red litmus paper blue.

• True

• False

What is Sodium Hydroxide?

• Acid

• Base

Which of the following is an acidic?

• toothpaste in water

• sugar in water

• vinegar

• bleach

Bases have many uses. They are mainly used to make:

• Glues

• Cleaning products

The strongest bases have pH values close to

• 0

• 7

• 14

Which of the following is a base?

• lemonade

• vinegar

• orange juice

• baking soda in water

If a substance is neutral, what would the pH be?

• 0

• 3

• 7

• 10

• 14

What substance turns blue litmus paper red?

• Acid

• Base