pH Acids and Bases

Which substance is basic?

• Citrus fruits

• Vegtables

• Sodas

• Eggs

pH 5 is considered to be a:

• weak base

• strong base

• weak acid

• strong acid

When red litmus paper turns blue...

• you are testing an acid

• you are testing a base

• you are testing a neutral

Which of the following is MOST acidic?

• 13

• 4

• 2

• 10

Is there is a substance that tests at pH 8.4, which is the best description?

• It is slightly acidic

• It is slightly basic

• It is highly acidic

• It is 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

Which organ produces a base for digestion?

• stomach

• small intestine

• spleen

• pancreas

Which organ produces an acid to help with digestion?

• pancreas

• stomach

• small intestine

• liver

A pH of 4 is known as...

• highly acidic

• slightly acidic

• highly basic

• slightly basic

Acid mixed with a base will __________ the mixture.

• nullify

• neutralize

• balance

• naturalize