Answer:
1) FREEZING
2)DISOLVING SALT IN WATER
Explanation:
A physical change is the one that can be easily reversed and there is no new substance formed. However , physical change can always be reversible.
For instance the separation of mixtures by evaporation is physical change.
As we have physical change there is also a chemical change which a change that's cannot be reversed easily and there's no new substance formed. Examples are addition of water to quicklime, fermentation of substance,melting a stick of butter
,using magnesium to displace hydrogen gas from water.
