C1 - Air Quality

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  • Created by: sophie99
  • Created on: 27-01-14 19:07
For a long time, the Earth's early atmosphere was mostly CO2. Where did this CO2 come from?
The volcanoes. They gave out lots of gas.
1 of 5
What three main gases is the current atmosphere made of and in what proportions are they found?
Nitrogen (78%), Oxygen (21%) and Argon (1%).
2 of 5
Atoms can disappear completely in some chemical reaction - true or false?
False.
3 of 5
What is a hydrocarbon?
A fuel containing carbon and hydrogen.
4 of 5
Name the main element that makes up coal.
Carbon.
5 of 5

Other cards in this set

Card 2

Front

What three main gases is the current atmosphere made of and in what proportions are they found?

Back

Nitrogen (78%), Oxygen (21%) and Argon (1%).

Card 3

Front

Atoms can disappear completely in some chemical reaction - true or false?

Back

Preview of the front of card 3

Card 4

Front

What is a hydrocarbon?

Back

Preview of the front of card 4

Card 5

Front

Name the main element that makes up coal.

Back

Preview of the front of card 5

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