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13 July, 14:22

What are the four signs of a chemical reaction

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  1. 13 July, 14:42
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    Color, turns in to a gas liqued or solid, temp, and i cant think of the last one
  2. 13 July, 14:51
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    1. color change 2. gas formation 3. temperature change (heat, light, cold) 4. precipitate formed.
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