Semester Review

An element contains only one type of atom, while a compound is made of two or more different elements.

An element can be broken down into simpler substances, while a compound cannot.

An element is a pure substance, while a compound is a mixture of substances.

An element is always a solid, while a compound can be a solid, liquid, or gas.

frozen water is less dense

Because of adhesion

Because of cohesion

Because of surface tension

Because of gravity

Adhesion

Cohesion

surface tension

melting point

Water is pushed by solutes

Capillary action caused by both cohesion and adhesion pulls the water up the plant stem.

Water is pulled by gravity

Only cohesion causes it to go up the plant.

damage to statues

dying fish

spread of disease

weakened trees

The mass is greater in A—before they are mixed.

The mass is greater in B—after they are mixed.

The mass is the same in both.

The mass depends on the temperature.