Properties of Acids and Bases

Which characteristic describes bases?

• taste sour

• feel slippery

• react with metals

• remove rust

Which is the correct set of acid properties?

• sour taste, reacts with metals, change litmus paper blue

• sour taste, reacts with metals, change litmus paper red

• bitter taste, slippery, change litmus paper red

• sour taste, slippery, change litmus paper red

What are properties of a base?

• Slippery, bitter, does not react with metals, pH above 7.
• Slippery, bitter, reacts with metals, pH below 7.
• Sour, reacts with metals, pH below 7
• Sour, reacts with metals, pH above 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 acids?

• Acids taste bitter.

• Acids taste sour.

• Acids feel slippery.

• Acids conduct electricity

• Acids turns litmus paper red.

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.

Bases have a pH of

• 7

• Less than 7

• More than 7

A sour taste is a characteristic of:

• acid

• base

• neutral

• pH scale

Your teacher tells you that a substance is acidic. This means the pH will be...

• More than 7

• 7 exactly

• Less than 7

• Higher than 14

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 litmus paper into the substance, and the litmus paper stays blue.

The substance in the beaker

• is a base

• is an acid

• have neutral pH

• doesn't have pH