Question

Which of the following is a clue that a chemical change has taken place?

Answer 1

The signs of a chemical change include color change, the production of an odor, a change in temperature, the formation of bubbles, and the formation of a precipitate. Hope this helps! ;)

Answer 2

During a chemical change, the composition of matter always changes. Four possible clues to chemical change include a transfer of energy, a change in color, the production of a gas, or the formation of a precipitate.

Step-by-step explanation: