Which of the following correctly describes how to calculate the density of a substance?

• A. Divide the mass of the substance by its volume.
• B. Add the mass and volume of the substance together.
• C. Divide the volume of the substance by its mass.
• D. Multiply the mass of the substance by its volume.

Answer: (A)

Verified step by step guidance

1. Recall the definition of density in chemistry, which is a measure of how much mass is contained in a given volume of a substance.
2. Express the density formula mathematically as \(\text{Density} = \frac{\text{Mass}}{\text{Volume}}\).
3. Understand that to calculate density, you need to take the mass of the substance (usually in grams) and divide it by its volume (usually in cubic centimeters or milliliters).
4. Recognize that adding mass and volume together or multiplying them does not give a meaningful physical property related to density.
5. Conclude that the correct method to find density is to divide the mass of the substance by its volume.