Physics, 13.04.2021 01:00 chloeboo

PLEASE HELP ASAP Observations can sometimes indicate whether a change is chemical or physical. Which of the following is most likely evidence of a chemical change?

A substance no longer occupies the same volume.
A substance gives off heat and light.
An object changes state.
An object gets smaller.

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PLEASE HELP ASAP Observations can sometimes indicate whether a change is chemical or physical. Whic...