Fact 1: Heat can change the state of matter.

Fact 2: If the state of matter is changed, as in a liquid to a gas, it is called a change of state.

Given the two facts above, answer the question "What can cause something to have a change of state?" with the following options: 
- smell
 - death
 - size
 - forces
 - sweat
 - fever
 - color
 - heat


 

        heat 