7.8

Where do animals get the oxygen and glucose they need for cellular respiration?

• Plants

• Mitochondria

• Sun

• other animals

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

List the steps of the scientific method

d

e

f

c

b

a

Analyze results

Form a hypothesis

Communicate results

Draw conclusions

Conduct experiment

Ask a question

What is the pH value of a neutral solution?

• 7.0

• 7.8

• 8.0

• 6.5

Which of the following pH values indicates a basic solution?

• 6.0

• 7.8

• 5.5

• 4.0

If a solution has a pH of 7.8, what can be inferred about its acidity?

• It is acidic

• It is neutral

• It is basic

• It is highly acidic

What is the pH of pure water at 25°C?

• 7.8

• 7.0

• 6.5

• 8.0

Which pH value is closest to that of human blood?

• 7.8

• 6.8

• 7.0

• 8.5

Tags

NGSS.HS-LS1-3

A solution with a pH of 7.8 is considered to be:

• Acidic

• Neutral

• Basic

• Highly acidic

What is the typical pH range of seawater?

• 7.8 to 8.4

• 6.0 to 7.0

• 5.5 to 6.5

• 8.5 to 9.0

Tags

NGSS.MS-PS1-2

Which of the following is a characteristic of a solution with a pH of 7.8?

• It turns red litmus paper blue

• It turns blue litmus paper red

• It has no effect on litmus paper

• It turns both red and blue litmus paper green