Acids & Bases 2

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

Releases hydrogen in an aqueous solution.

• base
• strong base
• acid
• weak base

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.
• Red litmus paper turns blue when placed in a base.
• Blue litmus paper stays blue when placed in an acid.
• Red litmus paper stays red when placed in a base.

Phenolophalein turns from clear to pink when the pH turns

• acidic

• basic

• saline

• ionic

Bases have a pH of

• 7

• Less than 7

• More than 7

An organic substance that changes color in the presence of an acid or base

• indicator

• inhibitor

• catalyst

• universal solvent

Which of the following are properties of bases? (choose all that apply)

• taste bitter.

• taste sour.

• feel slippery

• react with metals

• have a pH of more than 7.

tastes sour

• acid

• base

• both an acid and a base

Ends with "OH^-"

• acid

• base

• both an acid and a base

Acids will turn blue litmus paper _______________.

• red

• blue

• white

• yellow