Matter and energy

The student knows that matter has physical properties and those properties determine how it is described, classified, changed, and used. The student is expected to:

Classify matter by physical properties, including relative temperature, texture, flexibility, and whether material is a solid or liquid;

Compare changes in materials caused by heating and cooling;

Demonstrate that things can be done to materials such as cutting, folding, sanding, and melting to change their physical properties; and

Combine materials that when put together can do things that they cannot do by themselves such as building a tower or a bridge and justify the selection of those materials based on their physical properties.