Compléter Science-OXYGENVersion en ligne Matter par lina berardinelli 1 matter balance container mass gas atoms We would say that the oxygen we breathe is made of , small units that compose . We can not see oxygen going inside our nose because it is in a state , where the atoms are very far apart . However the oxygen has matter and therefore , which can be calculate with the help of a and a with bottoms , sides and top so the gas do not scape and mix with the air .
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