Question

a substance did not change its chemical nature in a reaction. which most likely describes the reaction

Answer 1

This substance most likely is an inert. It is a substance that is not chemically reactive. It does not change its chemical nature in a reaction. It does not easily react with other chemicals. Most of the group 8 gases in the periodic table are classified as inert, due to their having full outer electron shells. 

Answer 2

the answer is that "it was frozen"

I just took the test and got it right, hope it helps.