Which statement about density best describes its relation to mass and volume?

Which statement about density best describes its relation to mass and volume?

• A. A higher density means more mass per unit volume.
• B. Density is independent of mass and volume.
• C. Density measures area.
• D. Density equals volume per mass.

Answer: (A)

Density tells you how much mass is contained in a given volume. It is defined as density = mass divided by volume, so a higher density means more mass per unit volume. If you keep the volume fixed and increase the mass, density goes up; if you keep the mass fixed and increase the volume, density goes down. It’s not about area, and it’s not volume per mass. For gases, temperature and pressure can affect density, but the basic idea remains: density is mass per unit volume.

Density tells you how much mass is contained in a given volume. It is defined as density = mass divided by volume, so a higher density means more mass per unit volume. If you keep the volume fixed and increase the mass, density goes up; if you keep the mass fixed and increase the volume, density goes down. It’s not about area, and it’s not volume per mass. For gases, temperature and pressure can affect density, but the basic idea remains: density is mass per unit volume.