PH Scale Acids and Bases

William was conducting a science experiment and found that a certain substance had a pH less than 7. This substance is likely a(n) ______.

• Acid

• Alkaline

• Base

• Buffer

David was conducting a science experiment and found a substance with a pH greater than 7. This substance is a(n) _______.

• Base

• Acid

• Buffer

• Water

Mason and Abigail were conducting a science experiment. They were testing different solutions to see which one releases H+ in solution. Daniel suggested they test the following options. Which one should they choose?

• Base

• Acid

• Buffer

• Water

Anika, Samuel, and Grace were conducting a science experiment. They had lemon juice, hydrochloric acid, cabbage, and milk. According to the pH range, which substance did they find to be more acidic than lemon juice?

• Hydrochloric acid

• cabbage

• milk

• phosphoric acid

Tags

NGSS.MS-PS1-2

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

Tags

NGSS.MS-PS1-1

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

Label the pH Scale

a

b

c

Acids

Bases

Neutral

Label the correct spot on the pH scale

g

h

f

e

d

a

b

c

Stomach Acid

Battery Acid

Drain Cleaner

Neutral

Fresh Water

Base/Alkaline

Acidic

Soap

If the substance is neutral, what would the pH be?

• 3

• 5

• 7

• 9

• 11