Acids and Bases

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

When acids react with metals, they produce hydrogen gas and salt.

• True

• False

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

An acid is a solution that contains __________ ions dissolved in water.

• positive

• negative

The pH value of an acid represents its __________ of positive ions in the solution

• amount

• concentration

• color

• charge

Which of the following is a property of a base?

• bitter taste

• reacts with metals

• salty

• sour taste

The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.

• True

• False

All bases have a sour taste.

• True

• False

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

The strongest bases have pH values close to

• 0

• 14

• 7

• 5