Unit 4 Concept Check-up

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)

Is pure water acidic, basic, or neutral?

• Acidic

• Basic

• Neutral

In a neutralization reaction, what are the products of a reaction between an acid and a base?

• Another acid and base
• Carbon dioxide and a salt
• Water and a salt
• Either two acids or two bases

A substance is found to have the following characteristics:

Very bitter taste

Feels soapy to the touch

Produces OH^- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

Acids are substances that release H⁺ ions when dissolved in water.

• True

• False

Alkalis are substances that produce OH^- ion when dissolved in water.

• True

• False

HF is...

• an acid

• a base

• a salt

• an ionic compound

HNO₂

• a base

• a salt

• an acid

• an ionic compound