a: Physical change ~
b: water freezing or melting
What:
Water has 3 states: solid, liquid and vapor. The states can be changed by changing the surrounding temperature and air pressure. When water changes from liquid to solid, it freezes; that is a physical change. The individual water molecules don't react, they change the way they interact with each other.
Useful?
Writer: Not Stated
LCC:
Where: Reference Link Has Evaporated
Date: Feb 20 2014 5:33 PM
# 4968 Critique Analogy