AIR

What is the percentage of oxygen in the given pie chart of air?

• 20%

• 21%

• 22%

• 23%

Which one of the following gas is heavier than air?

• Nitrogen

• Hydrogen

• Helium

• Carbon dioxide

Which gas is added in fizzy drinks?

• Oxygen

• Hydrogen

• Nitrogen

• Cabon dioxide

Which gas is higher in volume in the air?

• Helium

• Nitrogen

• Oxygen

• Hydrogen

Which gas is filled in potato chips?

• Carbon dioxide

• Hydrogen

• Nitrogen

• Oxygen

Which of the following is NOT true about air?

• Air can be compressed by increasing the pressure.

• The higher you are above sea level, the less pressure air exerts.

• Air contains oxygen.

• The temperature of air has little impact on its properties.

If you pick up two balloons of air, one full and one almost empty, the one that is full is heavier because...

• air expands

• air has mass

• air has pressure

• air is compressed

The gas that makes up most of air is

• carbon dioxide

• oxygen

• nitrogen

• neon

What happens to air pressure as you move upward into the atmosphere?

• Increases

• Decrease

• Remain same

• There is no air pressure

At what percent other gases found in the air

• .96%

• .97%

• .98%

• .99%