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The signs of a chemical reaction include
Production of a gas (bubbles)
Production of heat
Production of light
Color change
Production of a solid (precipitate) in a solution
So from those answers we see that A is the correct answer.
Production of a gas (bubbles)
Production of heat
Production of light
Color change
Production of a solid (precipitate) in a solution
So from those answers we see that A is the correct answer.
The phrase that most accurately describes a chemical change is; "A change on the molecular level."
The major difference between a physical change and a chemical change is that a chemical change involves a change in the composition of a substance.
This implies that the atoms in a substance are rearranged during a chemical change.
This rearrangement of atoms corresponds to change on a molecular level.
Learn more; https://brainly.com/question/6284546