The Properties of Air

1

100

What was put at the bottom of the glass in Experiment 1 to show that air takes up space?

Kitchen paper

300

What is the name given to the amount of water vapour in the air

Humidity

500

Air is composed of which 2 main gases?

Nitrogen and oxygen

2

100

Yes or no: did the ruler stay balanced in Experiment 2?

No

300

Is air pressure higher at sea level or mountain top?

Sea level

500

Name one of the gases that makes up the other 1% of air.

Argon/carbon dioxide/neon/hydrogen

3

100

Why did the water fall out of the glass in Experiment 3?

Air pressure

300

Is there less oxygen at sea level or mountain top?

Mountain top

500

What gas do we exhale?

Carbon dioxide

4

100

Yes or no: air takes up space.

Yes

300

Which temperature of air can hold more water: hot air or cold air?

Hot air

500

What is the chemical reaction of inhaling and exhaling called?

Respiration