Benchmark 4D
The Physical Setting: Structure of Matter
Grades 3-5, page 77

Heating and cooling cause changes in the properties of materials. Many kinds of changes occur faster under hotter conditions.

NSES Content Standard B
Physical Science: Properties of objects and materials 
Grades K-4, page 127 
Materials can exist in different states--solid, liquid, and gas. Some common materials, such as water, can be changed from one state to another by heating or cooling.