Which of the following best determines the density of a substance?

• A. The color of the substance
• B. The pressure applied to the substance
• C. The mass of the substance divided by its volume
• D. The temperature at which the substance is measured

Answer: (C)

Verified step by step guidance

1. Understand that density is a physical property that relates the mass of a substance to the space it occupies, which is its volume.
2. Recall the formula for density, which is given by \(\text{Density} = \frac{\text{Mass}}{\text{Volume}}\).
3. Recognize that color, pressure, and temperature are not direct measures of density, although temperature and pressure can affect density indirectly by changing volume or mass distribution.
4. Focus on the fact that the best way to determine density is by measuring the mass of the substance and dividing it by the volume it occupies.
5. Therefore, the correct approach to find density is to use the mass divided by the volume, as expressed in the formula \(\rho = \frac{m}{V}\), where \(\rho\) is density, \(m\) is mass, and \(V\) is volume.