Elements
Aluminum.
Copper.
Sulphur.
Molecules
NaCl
Organic Molecules
Benzene
Image courtesy of JPL/NASA
Naphthalene
Image courtesy of JPL/NASA
Chrysene
Image courtesy of JPL/NASA
Perylene
Image courtesy of JPL/NASA
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Nitric acid is a very strong acid that can burn your skin. Nitric acid has nitrogen, oxygen, and hydrogen atoms in it. There is a very tiny bit of nitric acid gas in Earth's atmosphere. Nitric acid is
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...moreMethane is a kind of gas. There is a small amount of methane in the air you breathe. A methane molecule has carbon and hydrogen atoms in it. Methane is a greenhouse gas. That means it helps make Earth
...moreAmmonia is a kind of gas. Ammonia molecules (NH3) have hydrogen and nitrogen atoms in them. The air you breathe has a tiny bit of ammonia in it. When plants and animals die and decay, they give off ammonia.
...moreThere is more nitrogen gas in the air than any other kind of gas. About 4/5ths of Earth's atmosphere is nitrogen gas! A molecule of nitrogen gas is made up of two nitrogen atoms. There are other molecules
...moreOxygen (O2) is a kind of gas. A lot of the air you breathe is oxygen. That's a good thing, since we need oxygen to stay alive! About 4/5ths of the air in Earth's atmosphere is nitrogen (N2). Almost all
...moreHydrogen peroxide (H2O2) is a kind of chemical. A molecule of hydrogen peroxide has oxygen and hydrogen atoms in it. Hydrogen peroxide is a clear liquid. Hydrogen peroxide is in some liquids that are used
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