Density is defined as the ratio of which two physical quantities?

• A. Pressure and temperature
• B. Volume and area
• C. Mass and length
• D. Mass and volume

Answer: (D)

Verified step by step guidance

1. Recall the definition of density in general chemistry: density is a measure of how much mass is contained in a given volume of a substance.
2. Express this relationship mathematically as density \(\rho\) being the ratio of mass \(m\) to volume \(V\):
3. \[ \rho = \frac{m}{V} \]
4. Understand that mass is measured in units like grams (g) or kilograms (kg), and volume is measured in units like cubic centimeters (cm\^3) or liters (L).
5. Therefore, density relates the physical quantities of mass and volume, not pressure, temperature, area, or length.