Chemistry, 20.09.2020 16:01 lizzyhearts

If two or more elements or chemical compounds come into contact with one another and there is enough present, a chemical change may take place.

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Chemistry, 21.06.2019 21:00, yousifgorgees101

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Chemistry, 22.06.2019 04:00, tifftifftiff5069

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Chemistry, 22.06.2019 07:00, maryjane8872

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Chemistry, 22.06.2019 10:30, kluckey3426

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If two or more elements or chemical compounds come into contact with one another and there is enough...