Chemistry, 28.01.2020 08:31, texaslady36

When two substances are mixed together, a color change is observed. does this mean that a chemical reaction has definitely occurred?

- yes because any change indicates a chemical reaction.
- no because some physical changes produce color changes.
- no because color changes are not indicators of chemical reactions.
- yes because color changes occur only when new compounds are formed.

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When two substances are mixed together, a color change is observed. does this mean that a chemical r...