What are four possible clues that a a chemical change has taken place?
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gas production, tempertature change, color change, and precepitation.
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The four possible clues that a chemical reaction has taken place are:
1) Change in colour.
2) Formation of precipitate.
3) Change in temperature.
4) Change in state.
1) Change in colour.
2) Formation of precipitate.
3) Change in temperature.
4) Change in state.
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