Question

Which evidence is an indication that a chemical reaction has occurred?

Answer 1

Answer/Explanation:

A chemical reaction is also known as a chemical change.

A chemical reaction occurs when one or more reactants change into new substances called products

There are a few changes that might accompany a chemical reaction including:

• a change in the color of the solution
• the formation of a gas, which might be visible through bubbles being produced
• a temperature change - often the chemical reaction will produce heat
• the formation of a precipitate - this means that particles that do not dissolve in the solution will form
• odor change - a different smell might be produced
• tlight given off - some reactions might produce a brighr ligh