C1, C2 and C3

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What is the composition of the atmosphere
78% nitrogen 215 oxygen 1% argon and other noble gases
1 of 15
Name two natural processes that remove carbon dioxide from the atmosphere
Photosynthesis and dissolving in oceans
2 of 15
Explain why combustion is a type of oxidation reaction
Combustion is when a fuel reacts with oxygen.
3 of 15
What does the term hydrocarbon mean?
A hydrocarbon is a compound made only of a carbon and hydrogen.
4 of 15
Give three ways to reduce pollution from powerstations
Using less electricity, remove sulfur from the fuel, remove sulfur dioxide and particulates from gases released by power station
5 of 15
Give four ways to reduce pollution from cars
More efficient engines, catalytic converters, use public transport more, legal limits from emissions, low-sulfur fuels
6 of 15
Explain how NOx gases are formed
Atmospheric nitrogen is oxidised by atmospheric oxygen at high temperatures to form nitrogen monoxide (NO) which is further oxidized to form nitrogen dioxide (NO2)
7 of 15
Describe how a car engine produces nitrogen dioxide
Sulfur impurities in fuel react with oxygen. Sulfur dioxide reacts with rainwater
8 of 15
Explain why scientists cant really be sure what the composition of the earths early atmosphere was like
a) no humans around at the time b) no actual data collected at the time
9 of 15
Whats is complete combustion and what is its equation?
Complete combustion is the burning of fuel in the presence of oxygen. Methane + oxygen ----> Carbon dioxide + water (CH4 + 2O2 ----> CO2 + 2H2O)
10 of 15
What is incomplete combustion and what are its equations?
Incomplete combustion is the burning of fuel without oxygen. Methane + oxygen -----> carbon + water (CH4 + )2 ----> C + H2O
11 of 15
Name two natural materials
Rubber, wool
12 of 15
Name two synthetic materials
Polythene, polyesters, PET, Nylon
13 of 15
Explain the link between molecule size and boiling point
The larger the molecules, the stronger the inter molecular forces and the more energy that is needed to overcome the force. This results in a higher boiling point.
14 of 15
Give a use for kerosene/ paraffin
Fuel for airplanes, central heating, camping lanterns
15 of 15

Other cards in this set

Card 2

Front

Name two natural processes that remove carbon dioxide from the atmosphere

Back

Photosynthesis and dissolving in oceans

Card 3

Front

Explain why combustion is a type of oxidation reaction

Back

Preview of the front of card 3

Card 4

Front

What does the term hydrocarbon mean?

Back

Preview of the front of card 4

Card 5

Front

Give three ways to reduce pollution from powerstations

Back

Preview of the front of card 5
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