Question

What changes in physical properties can be used as evidence that a chemical reaction has occurred? Please list three or more.

Thank you!

Answer 1

The change of color, odor, and heat within the properties of the object can prove that a chemical reaction has occurred.

Answer 2

Answer:

if  the reaction is a chemical change, new substances with different properties and identities are formed. This may be indicated by the production of an odor, a change in color or energy, or the formation of a solid.

Explanation:

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