Question

How do you understand that a chemical change took place?​

Answer 1

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:

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Answer 2

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)