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For a long time, the Earth's early atmosphere was mostly CO2. Where did this CO2 come from?
Volcanoes
1 of 20
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 20
Name one result of pollution which causes direct harm to humans, and which one causes indirect harm.
Direct - carbon monoxide reduces the amount of oxygen that the blood carries. Indirect - sulfur dioxide causes acid rain which pollutes lakes and rivers.
3 of 20
Atoms can disappear completely in some chemical reactions - true or false?
False
4 of 20
What is a hydrocarbon?
Hydrogen and carbon. Many are fossil fuels - formed from the remains of dead plants and animals over millions of years.
5 of 20
Name the element that makes up coal.
Carbon
6 of 20
When a hydrocarbon fuel burns, with what substance in the air do the hydrogen and carbon atoms combine?
Oxygen
7 of 20
When hydrocarbons burn in plenty of oxygen, the atoms rearrange themselves into carbon dioxide and what else?
Hydrogen oxide
8 of 20
What removes carbon dioxide from the atmosphere?
When plants photosynthesise and also when it gets dissolved in rainwater and in seas, lakes and rivers.
9 of 20
What atoms make up carbon monoxide? Under what conditions is carbon monoxide produced.
Carbon monoxide has one oxygen atom attached to a carbon atom. It's produced id there's not enough oxygen available when fuel burns.
10 of 20
What are particles of carbon otherwise know as and what kind of pollution do they cause?
Particulate carbon is produced when fuels burn incompletely. They cause soot which can make buildings look dirty.
11 of 20
Describe briefly how the pollutant sulfur dioxide is produced.
When sulfur atoms burn, they combine with oxygen in the air to produce the pollutant sulfur dioxide.
12 of 20
How does sulfur dioxide leave the atmosphere?
In the form of acid rain.
13 of 20
What effects does acid rain have on the environment?
It causes lakes to become acidic, which kills plants and animals. It also kills trees and damages buildings and statues made from some kinds of stone.
14 of 20
Describe how nitrogen dioxide is produced when fossil fuels are burnt.
When nitrogen and oxygen in the air are exposed at high temperatures, they combine to form nitrogen monoxide. Nitrogen monoxide then reacts with further oxygen in the air to produce nitrogen dioxide.
15 of 20
Give the formulas of nitrogen monoxide and nitrogen dioxide.
Nitrogen monoxide formula is NO. Nitrogen dioxide formula is NO2.
16 of 20
What effect do nitrogen oxides have on the environment?
They react with the moisture in the clouds to produce a dilute nitric acid. This then falls to the Earth as acid rain.
17 of 20
What do catalytic converters do?
They convert nitrogen monoxide in to harmless nitrogen and oxygen. They also convert carbon monoxide into carbon dioxide by adding oxygen.
18 of 20
Name two things that everyone could do in order to reduce carbon dioxide pollution.
Use public transport or running cars on biofuels.
19 of 20
How do MOT tests help combat air pollution?
Restrict the amount of polluting emissions coming from a car by following the legal limit.
20 of 20

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

Name one result of pollution which causes direct harm to humans, and which one causes indirect harm.

Back

Preview of the front of card 3

Card 4

Front

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

Back

Preview of the front of card 4

Card 5

Front

What is a hydrocarbon?

Back

Preview of the front of card 5
View more cards

Comments

LukeBarratt

That was a fun little task ;)

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