8th Grade Science Review Part 3

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 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
• Water
• Blood

A solution with a pH of 3.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

A solution with a pH of 8.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

Carbon dioxide is returned to the atmosphere primarily by the

• eruption of volcanoes.

• respiration of consumers.

• fallout from solar flares.

• process of photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Plant cells make their own food by taking in

• oxygen and water.

• oxygen and hydrogen.

• carbon dioxide and water.

• carbon dioxide and oxygen.

Tags

NGSS.MS-LS1-6

What process describes how plants use air, water, and energy from the Sun to make their own food?

• condensation

• evaporation

• photosynthesis

• weathering

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the formula for cellular respiration?

• CO2+H2O+Light Energy-->C6H12O6+O2

• CO2+H2O+ATP-->C6H12O6+O2

• C6H12O6+O2-->CO2+H2O+Light Energy

• C6H12O6+O2-->CO2+H2O+ATP

Tags

NGSS.MS-LS1-7