Which one is a chemical change?? iron rusting or alcohol evaporating??

Question

Which one is a chemical change?? iron rusting or alcohol evaporating??

Answer 1

Iron rusting.

Alcohol evaporating is a physical change.

Answer 2

iron rusting

Answer 3

Iron rusting, because the iron's composition is actually changing. When alcohol evaporates, the mixture (water and w/e liquor/flavoring) is separating. Mixtures have no prior chemical bonds, so it is not a chemical change.