Question

In each chemical reaction shown, what are the indicators of the chemical reaction? Check all that apply.

1) Meat cooking on a grill
2) Gas formation
3) Color change
4) Light emission

Answer 1

Chemical reactions can be indicated by color change, gas formation, precipitate formation, and light emission.

Step-by-step explanation:

Chemical reactions can be indicated by several visual clues. These clues include:

1. Color change: A change in color occurs during the reaction.
2. Gas formation: A gas is produced during the reaction.
3. Precipitate formation: A solid product called a precipitate is produced in the reaction.
4. Light emission: A transfer of energy occurs as a result of the reaction and may manifest as light emission.