Please answer all three of these questions ​

I think it's 1.D

2.C

3.C

my apologies if it's incorrect

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).