Density and Changes of State

Front

Density is defined as the mass per unit volume.

Back

Front

The formula for density.

Back

Front

Exception to the density comparison between solids and liquids.

Back

Ice and water.

Front

Density characteristic of gases.

Back

Gases have a far lower density than solids and liquids.

Front

Reason for lower density in gases.

Back

The spacing between atoms increases significantly, decreasing density.

Front

Effect of state change on mass.

Back

Mass is conserved during a change of state.

Front

Example of mass conservation during evaporation.

Back

If 20g of liquid evaporates, the gas produced will also weigh 20g.

Front

Nature of changes of state.

Back

These are physical changes, not chemical changes.

Front

Reason changes of state are not chemical.

Back

The material retains its original properties when reversed.

Front

Definition of melting.

Back

Transition from solid to liquid.