Question

A substance which melts/boils at a fixed temperature is a pure substance.

True
False

Answer 1

yes true

Answer 2

one more thing im confused one, if you don't mind.

Answer 3

would sublimation be considered a physical change?

Answer 4

this is a multiple choice question being answered and ive come down to two options, cutting out combustion and decomposition, unless one of those is the answer. whats left is sublimation and evaporation.

Answer 5

sublimation is a physical change

Answer 6

So would it be evaporation?