Acids, Bases & Neutralization

An indicator will ______________ when it is in contact with an acid or base

• Bubble
• Form a new substance
• Change color
• Stay the same color

Calcium carbonate is a(n)...

• Acid

• Base

• Neither

Ocean water is only slightly basic. What might its pH value be?

• 5

• 8

• 12

• 2

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

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

What does a base release when placed in water?

• hydroxide ions (OH-)

• hydrogen ions (H+)

• ions

• molecules

As the number of hydrogen ions (H⁺) decreases, the pH ___________.

• increases

• decreases

• stays the same

What is the pH of water?

• 11
• 4
• 7

What is the formula for phosphorous acid?

• H₃PO₄

• H₂PO₄

• H₃P

• H₃PO₃

Tags

NGSS.MS-PS1-1

What is the formula for nitric acid?

• HNO₂

• HNO₃

• HNO₄

• H₂NO₃