trwy6517 trwy6517
  • 21-09-2018
  • Chemistry
contestada

one of the signs of a chemical reaction is taking place

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vinciforaj1 vinciforaj1
  • 21-09-2018

One sign of a chemical reaction is that gas is being created.

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nutcracker11
nutcracker11 nutcracker11
  • 22-09-2018
Any sort of changes including color temperature etc.
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