So, when you produce a chemical change, it's something that's irreversible. Once you do it, you can't go back.
A few examples of chemical change would be:
•Rusting of iron
•Digesting food
While, an example that is not a chemical change would be:
•Melting solid ice into water
*KEY: a chemical change creates a whole new substance, physical change doesn't.*
~Hope this made sense & helped! Good luck!