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Veseljchak [2.6K]
2 years ago
14

How could you know that a chemical change has taken place?

Physics
2 answers:
Contact [7]2 years ago
5 0

Answer:

There are five signs of a chemical change:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid)

Explanation: brainliest please

timama [110]2 years ago
5 0
There's at least one new substance there, that wasn't there before.

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