Purpose: This experiment is used to show that frozen water expands.
1 small baby food jar
red or blue food coloring
a permanent marking pen
a piece of clay the size of a marble
What happened to the height of the water?
The frozen water is above the mark you made.
Water molecules are attracted to each other. When they are close to each other, they attract each other and stick or bond together forming hexagonal like structures. As it gets colder these molecules have less flexibility to move and they take up more space. Liquid water molecules on the other hand are free to move around and are more flexible and take up less space than the ice structures.