Chemical Changes
Chemical changes are when a substance combines with
another substance, this is called a chemical reaction. One
example is a burning candle, this an example of chemical
change through the combination of wax and oxygen. The
reaction produces heat, light, and carbon dioxide.
Physical Changes
Physical changes are changes that form from a chemical
substance, but not its chemical composition. Ex: Crushing
a Can, Melting an Ice Cube, Boiling Water, Breaking a
Glass, and Dissolving Sugar in Water
Chemical Changes vs.
Physical Changes
A physical change in a substance does not change
when there is a chemical reaction. In a chemical change
there is a chemical reaction, a new substance is formed.