Question

write down properties of chemical reaction s​

Answer 1

Explanation:

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Ans...

The signs of chemical change include changes in color, temperature, the production of light, changes in odor, and the formation of gases.

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Answer 2

Answer:

The following can indicate that a chemical change has taken place, although this evidence is not conclusive:

Change of odor.

Change of color (for example, silver to reddish-brown when iron rusts).

Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.