Gases in the air Flashcards
1
Q
20% of the air is made up of what?
A
Oxygen
2
Q
The other 1% of the air is what?
A
A mixture of gases
3
Q
Is nitrogen a reactive or unreactive gas?
A
Unreactive gas
4
Q
What is nitrogen needed by?
A
Plants and humans for growth
5
Q
Is oxygen a reactive or unreactive gas?
Give an example
A
Reactive (helps a fire to burn)
6
Q
What is oxygen needed for?
A
Humans need it to survive
7
Q
What is oxygen used by our bodies for?
A
Oxygen is used by our body in the respiration process where we get energy from food
8
Q
79% of the air is made up of what?
A
Nitrogen
