Key factors that need to be considered when choosing a fuel are: energy value, availability, storage, toxicity, pollution caused and ease of use.
1 of 8
What is in clean air?
Clean air is made up of 78% nitrogen, 21% oxygen and of the remaining 1%, only 0.035% is carbon dioxide.
2 of 8
How can carbon dioxide be tested for?
If hydrocarbons burn in a plentiful supply of air, carbon dioxide and water are made. In an experiment, carbon dioxide can be tested for with limewater; it turns the limewater milky.
3 of 8
Where did the original atmosphere come from?
The original atmosphere comes from the degassing of early volcanoes which were rich in water and carbon dioxide. The water condensed to form oceans. Photosynthetic organisms helped to increase the levels of oxygen through photosynthesis.
4 of 8
What is the carbon cycle?
Photosynthesis, respiration and combustion are processes in the carbon cycle.
5 of 8
Name one pollutant?
Sulfur dioxide is a pollutant that can cause difficulties for people with asthma. It can also dissolve in water to form acid rain hat damages wildlife and limestone buildings.
6 of 8
What is a catalytic converter?
A car fitted with a catalytic converter changes carbon monoxide into carbon dioxide.
7 of 8
What happens in a catalytic converter?
In a catalytic converter, a reaction between nitric oxide and carbon monoxide takes place on the surface of the catalyst. The two gases formed are natural components of air - nitrogen and carbon dioxide. 2CO + 2NO --> N2 + 2CO2
8 of 8
Other cards in this set
Card 2
Front
What is in clean air?
Back
Clean air is made up of 78% nitrogen, 21% oxygen and of the remaining 1%, only 0.035% is carbon dioxide.
Comments
No comments have yet been made