FORM 1 CHAPTER 7 AIR

Gas P is

• Oxygen

• Nitrogen

• Carbon dioxide

• Inert gas

Gas Q is

• Oxygen

• Carbon dioxide

• Nitrogen

• Inert gas

Gas R is

• Oxygen

• Nitrogen

• Carbon dioxide

• Inert gas

Gas S is

• Oxygen

• Inert gas

• Carbon dioxide

• Nitrogen

importance of gas P

• Help to produce nitric acid and ammonia

• Photosynthesis

• Respiration

• Fire extinguisher

What will happen if percentage of S increase ?

• Temperature increases

• Thinning of ozone layer

Why air is considered a mixture ?

• Each gas has no color, so cannot be differentiate

• Each gas still shows its original properties when separated.

The gas is used to fill up light bulbs

• Helium

• Neon

• Argon

Carbon cycle maintain this gas in the air

• Nitrogen

• Carbon monoxide

• Carbon dioxide

A layer that surrounds the Earth

• Atmosphere

• Cloud

• Sky