Acids & Bases

Which of the following statements is true concerning acids and bases?

• acids and bases don't react with each other

• acids mixed with bases neutralize each other

• acids mixed with bases make stronger bases

• acids mixed with bases make stronger acids

True or false: bases are sometimes called alkaline.

• True

• False

Neutral solutions have a pH of:

• 0

• 1

• 7

• 14

True or false: a neutral solution has equal amounts of H⁺ and OH^-.

• True

• False

Which is true?

• pH of less than 7 is basic; pH of more than 7 is acidic

• pH of less than 7 is acidic; pH of more than 7 is basic

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

• Acid

• Base

• Neither (Neutral)

HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?

• Acid

• Base

• Neither (Neutral)

Vinegar is an example of:

• An acid.

• A base.

• Neither an acid nor a base.

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue and a piece of red litmus paper into the substance. Blue litmus paper stays blue, but red litmus paper turns blue. The substance in the beaker

• is a base.

• has a neutral pH.

• is an acid.

• does not have a pH.

An acid will make ​ (a)   .

A base will make ​ (b)   .

• blue litmus paper turn red
• red litmus paper turn blue