Introduction to Acids and Bases

Which of these pH values represent an acid?

• 4

• 8

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

• 6.5

• 7.8

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

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The properties of acids include conducting electricity when dissolved in water, sour taste, and they react with metals to produce hydrogen gas.

• True

• Fasle

Which of the following is an acid?

• vinegar

• bleach

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

• amount

• concentration

Which of the following is a property of a base?

• bitter taste

• reacts with metals

Bases have many uses. They are mainly used to make cleaning products, soaps, and concrete.

• True

• False

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

• True

• False

Tags

NGSS.HS-PS1-5

All bases have a sour taste.

• True

• False