Acids and Bases

True or false: bases are sometimes called alkaline.

• True

• False

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

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

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)

Water found near sources of air pollution tends to be:

• Acidic.

• Basic.

• Neither. Air pollution doesn't alter the pH of water.

Tags

NGSS.HS-ESS3-5

NGSS.HS-PS1-5

Which is NOT a property of acids?

• slippery

• pH below 7

• react with metals

• contain H¹⁺ ions

Tags

NGSS.HS-PS1-1

Which is NOT a property of bases?

• caustic

• slippery

• pH below 7

• bitter

What is the purpose of an "indicator"?

• changes color if a chemical reaction occurs

• changes color if a physical change occurs

• changes color in the presence of an acid or base

• changes color when a salt dissolves in water