Acids and Bases

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

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

• 6.5

• 7.8

• 4.2

• 12.2

Which of the following is a property of a base?

• bitter taste

• reacts with metals

• salty

• sour taste

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

Which of the following is a base?

• baking soda in water

• orange juice

• vinegar

• lemonade

Ocean water is only slightly basic. What might its pH value be?

• 5

• 8

• 12

• 2

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

• 3

• 5

• 7

• 9

• 11

Which item is an acid?

• Drain cleaner
• Ammonia
• An orange.

What does a pH scale do?

• Tells if a substance is an acid or base
• Measures the strength and weakness of acids and bases
• Both statements are correct

What is another name for a base?

• Acid
• Alkaline
• pH