Is dissolving salt a chemical change or physical change and why?

It's a physical change because the composition of the salt hasn't change. Only the change in substance/form has occured. To tell if something has undergone physical change is:

•Melting

•Boiling

•Freezing

•Condensing

•Breaking

•Bending

•Dissolving

•Molecules can change motion and proximity

To tell if something changed chemically:

•Molecules rearrange with other molecules to make new substance

•Can be production of flames

•Color change

•Bubbling/fizzing

•Temp. change

• change in composition

clouds form

solid ice forms on leaves.

water droplets form on grass.