what is oxygen?
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Oxygen is a colorless and odorless gas that people need to breath. An example of oxygen is the colorless and odorless gas that you breath in every day. A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994.
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Oxygen is a chemical element with an atomic number of 8 (it has eight protons in its nucleus). Oxygen forms a chemical compound (O2) of two atoms which is a colorless gas at normal temperatures and pressures. ... We humans, along with many other creatures, need oxygen in the air we breathe to stay alive.
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