Question

How can you recognize that an exothermic reaction has occurred?

Question 1 options:

The reaction will create a precipitate


The reaction will absorb heat


The reaction will change color


The reaction will release heat

Answer 1

A change in color, gas production, formation of precipitate, and energy transfer are indicators of a chemical reaction, including exothermic reactions.

Step-by-step explanation:

There are four visual clues that indicate that a chemical reaction is likely occurring:

1. A change of color occurs during the reaction.
2. A gas is produced during the reaction.
3. A solid product called a precipitate is produced in the reaction.
4. A transfer of energy occurs as a result of the reaction.

These factors can help recognize that an exothermic reaction has occurred.

Answer 2

D, the reaction will release heat

Step-by-step explanation:

exo means outser and thermic means heat