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6 Cards in this Set
- Front
- Back
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For a long time Earth's early atmosphere was mostly CO2. where did this CO2 come from?
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When humans came into existence they started to create a lot of CO2 just by breathing. The next thing that happened was the industrial revelation which was the creation of factories. This created so much more CO2.
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what three main gasses are in the atmosphere and in what percentage are they found in?
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Oxygen(21%) Argon(1%) Nitrogen(78%)
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Atoms can disappear completely in some chemical reactions- true or false?
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this is false, Atoms are always there. They cannot disappear but can change.
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What is a hydrocarbon?
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A hydrocarbon is a atom which contains two elements Hydrogen and Carbon. |
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Can you name the elements that make up coal?
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Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
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what removes carbon dioxide from the atmosphere?
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Plants.
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