Acids, Bases, pH

A substance tests with a pH of 12.5 is...

• slightly basic

• highly acidic

• slightly acidic

• highly basic

The range for acidic substances is ______, and the range for basic substances is _____.

• 0-14 for both

• 0-7, 7-14

• 1-8, 10-14

• 1-4, 6-10

A pH of 11 is...

• highly acidic

• slightly acidic

• highly basic

• slightly basic

A pH of 4 is known as...

• highly acidic

• slightly acidic

• highly basic

• slightly basic

What pH is most likely to turn blue litmus paper red?

• 8

• 10

• 4

• 14

Which pH number ismost likely to turn red litmus paper blue?

• 4

• 6

• 1

• 10

Sodas or soft drinks are considered to be:

• Basic

• Neutral

• Acidic

• None of the above

Which substance is basic?

• Citrus fruits

• Vegtables

• Sodas

• Eggs

When red litmus paper turns blue...

• you are testing an acid

• you are testing a base

• you are testing a neutral

Which organ produces a base for digestion?

• stomach

• small intestine

• spleen

• pancreas