Answer:
Non-destructive physical changes
Step-by-step explanation:
Hi, this is not a rule but most of the non-destructive physical changes are reversible.
In that group of changes you may find:
- State changes (solidification, evaporation, etc.)
- Adsortion and desortion
- Temperature changes
- Mixtures
Think of a physical change and then try to figure out which process can reverse that.