Density & Temperature

Front

What is density?

Back

Density is the mass of an object divided by its volume, typically expressed in grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

Front

How does temperature affect the density of a substance?

Back

Generally, as temperature increases, the density of a substance decreases because the molecules move faster and spread apart.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What happens to the density of a gas when it is compressed?

Back

The density of a gas increases when it is compressed because the same mass occupies a smaller volume.

Front

What is the relationship between mass, volume, and density?

Back

Mass is equal to density multiplied by volume (Mass = Density x Volume).

Front

Why do some objects float while others sink in water?

Back

Objects float if their density is less than that of water (1 g/cm³) and sink if their density is greater.

Front

What is the unit of measurement for density?

Back

Common units for density include grams per cubic centimeter (g/cm³) and kilograms per cubic meter (kg/m³).

Front

How does the density of solids compare to liquids and gases?

Back

Solids generally have a higher density than liquids, which in turn have a higher density than gases.

Front

What is heat in terms of energy?

Back

Heat is the transfer of energy from one object to another due to a temperature difference.

Front

What is the effect of temperature on the movement of molecules in a gas?

Back

As temperature increases, the molecules in a gas move faster.