Interactive Chemistry Worksheets for Students
Matter exists in one of three physical states - solid, liquid or gas.
In a physical change matter changes state from one physical state to another.
For example when an ice cube melts it changes from the solid state to the liquid state.
Physical changes are easily reversible. In the melted ice cube is put back into the freezer it will change back into a solid.
Examples of physical changes.
|Sublimation||Dry ice change from a solid to a liquid|
|Melting or fusion||An ice cube melting|
|Condensation||The formation of dew on grass in the morning|
|Evaporation||A puddle disappearing on a hot day|
|Solidification or freezing||The formation of hail stones|