In general, chemical reactions occur because reactants are trying to become more
a) electronegative.
b) energetic.
c) radioactive.
d) stable.

I think it is D. Stable Hope That Helped :)

The correct answer is d

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.