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26 October, 09:27

How do you know when a chemical reaction has taken place?

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Answers (2)
  1. 26 October, 11:26
    0
    Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.
  2. 26 October, 12:13
    0
    When the color or compound has completely changed into something different
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