Question

Which of the following always changes when a substance undergoes a chemical change?

A. State of matter of the substance.

B. Arrangement of the atoms composing the substance.

C. Color of the substance.

D. Mass of the substance.

Answer 1

I would say C.

Step-by-step explanation:

My best bet is C but in all honesty, i have no clue. -hope my non-helping helped :D

Answer 2

A. State of matter of the substance.

Step-by-step explanation:

During a chemical change, the composition of matter always changes.