Question

Give two examples each of physical changes that involve :

(a) Change of shape
(b) Change of state
(c) Change of size

Answer 1

a.) change of shape
1. crushing a can
2.chopping wood

b) change of state
1.Rubbing alcohol left uncovered will evaporate quickly into the air. It turns to a gas but maintains the properties of alcohol.
2. Hot molten iron is a liquid and when left to cool will from solid steel and can take many forms.


c.)Change of size
1.) ice melting
2.) water vapourization