Explanation

Density measures how much mass is packed into a given volume.

Formula:
Density = mass ÷ volume
or
D = m ÷ V

Key ideas:

• High density → more mass in less space

• Low density → less mass spread out

• Objects can be large but not dense, or small and very dense

Common units:

• g/cm³

• kg/m³

Quiz: Density

1. Write the formula for density.

2. If mass increases but volume stays the same, what happens to density?

3. What happens to density if volume increases but mass stays the same?

4. What does high density mean?

5. What unit could density be measured in?

Answer Key

1. Density = mass ÷ volume

2. Density increases

3. Density decreases

4. More mass packed into less space

5. g/cm³ or kg/m³