Question

Is evaporation a chemical or physical change?

Answer 1

Evaporation is a physical change it is not a chemical change.

Explanation:

It is a physical change because it is going from the liquid phase to the gas phase. It is not a chemical change because it is still made of two hydrogen atoms and an oxygen atom.

http://citadel.sjfc.edu/students/scm03254/e-port/msti%20260/evaporation.html

Answer 2

Physical.

Explanation:

Evaporation does not result in any chemical reaction, nor any breaking or making of chemical bonds. If you consider water before evaporation, it is `H_2O(l)`, if you then consider water after evaporation it is `H_2O(g)`. It is still `H_2O` - the molecule hasn't changed, all that has changed is the physical state.

A chemical change is one in which changes to chemical structure occur during the change, i.e. a chemical reaction occurs so that chemically different substances are present after the change, compared to before the change.