pH and Ocean Acidification

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

A(n) ______ is a substance with a pH less than 7.

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

What is the only substance with a neutral pH of 7?

• Milk
• Orange Juice
• Pure Water

• Blood

A base is a substance...

• That releases OH- ions when dissolved in water

• That releases H+ ions when dissolved in water

• Does not release any ions when dissolved in water

• None of the above

Tags

NGSS.MS-PS1-2

Water has a neutral because...

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it does not produce any ions

• it has an equal amount of H+ and OH- in solution

Bleach is a strong base, what is the pH level of bleach?

• 13
• 14
• 1
• 2

Tags

NGSS.MS-PS1-2

Carbon dioxide and seawater combine to form...

• calcium carbonate
• carbon monoxide
• carbonic acid 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An example of a marine organism that needs calcium carbonate is...

• a crab
• a shark
• an octopus
• a jellyfish

What happens to 1/4 of the greenhouse gases in the atmosphere?

• It is released into space.

• It gets absorbed by the ocean.

Tags

NGSS.MS-ESS2-6