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18 Cards in this Set
- Front
- Back
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The earths early atmosphere was mostly co2. Where did this co2 come from? |
The volcanic eruptions |
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What three main gases is the current atmosphere Made of and in what proportions are they found ? |
Oxygen; 21% Nitrogen; 78% Carbon dioxide; 0.01% |
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Which pollution causes direct harm to humans and which causes indirect harm? |
Direct harm; Carbon monoxide, Causes health problems & damages red blood cells Indirect; Carbon dioxide Causes green house gas & global warming |
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Atoms can disappear completely in some chemical reactions - true or false ? |
FALSE |
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What is a hydrocarbon? |
Chemicals that obtain only Hydrogen & carbon |
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Name the main element that makes up coal |
Carbon |
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A hydrocarbon fuel burns , with what substance does in the air do the hydrogen and carbon atoms combine ? |
Oxygen |
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What removes carbon dioxide from the atmosphere? |
Plants using photosynthesis |
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What atoms make up carbon monoxide ? |
Carbon & oxygen |
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How does sulfur dioxide leave the the atmosphere? |
So2 reacts with rain to make acid rain |
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What affect does acid rain have on the environment? |
Prevents plants from growing + damaged buildings |
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Formula for nitrogen monoxide + nitrogen dioxide |
No + No2 |
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What affect does nitrogen oxides have on the environment? |
Asthma + breathing problems |
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What do catalytic converters do? |
Convert harmful gases into less harmful gases |
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What is combustion? |
Burning fuels |
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What is incomplete combustion? |
Incomplete combustion occurs when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced instead of carbon dioxide. |
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What do tectonic plates move on? |
The earths crust |
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What are Three uses of chlorine |
To kill bacteria, used to make plastic's, used to make PVC |
