Simple Definition:
A physical change is a type of change that alters the appearance or form of a substance without creating a new substance. [substance: a type of material or matter]
Examples:
- Melting an ice cube into water.
- Cutting a piece of paper into smaller pieces.
Very Simple Definition:
A physical change is when something looks different but is still made of the same thing.
Examples:
- Ice melting and becoming water.
- Breaking a rock into pieces.