Which of the following is NOT a possible sign of a chemical change? (1 point)

Question

a change in state
a change in color
the release of a gas
the release of energy

Answer 1

I think its a change in state because changing color is like iron turn to rust, the release of a gas is like changing the how much their it is, and last the release of energy change you to get tier so I say change in state.

Answer 2

swsa