Which statement describes a chemical property?

Question

A.) Steel is shaped into automobile fenders

B.) Water begins to boil when it reaches 100 degrees Celsius

C.) Oil floats on water because it’s less dense

D.) Iron slowly forms rust when exposed to oxygen gas

Answer 1

By definition, a chemical change involves a chemical reaction that changes the chemical composition of a substance. A physical property is a characteristic of matter such as odor, melting point, etc. Therefore with a physical change, the subject/substance can be returned to it's original state, whereas a chemical change cannot be reversible.