Chapter 10: Gases

What is the percentage of oxygen in air?

• 21%

• 55%

• 17%

• 67%

What is the percentage of carbon dioxide in air?

• 15%

• 98%

• 0.03%

• 0.75%

What is the percentage of water vapour in air?

• 0.03%

• 79%

• 80%

• None of the above

Tags

NGSS.MS-ESS2-4

Which of these is NOT a noble gas?

• Argon

• Nitrogen

• Radon

• Krypton

Besides argon, radon or krypton, name one other noble gas.

The amount of oxygen and carbon dioxide in the air remains constant because of the ________________ cycle.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of these is a use of carbon dioxide?

• Breathing tanks

• Welding

• Food preservative

• Fire extinguisher

Tags

NGSS.MS-LS1-6

Besides putting out fires, name one other use of carbon dioxide.

Tags

NGSS.MS-LS1-6

Name one of the properties of oxygen

Why is nitrogen used to fill bags of chips as a preservative?

• It doesn't smell.

• It doesn't react with anything.

• It is combustible.

• It is very light.