Density is defined as the relationship between which two quantities?

• A. Length and area
• B. Moles and molar mass
• C. Temperature and pressure
• D. Mass and volume

Answer: (D)

Verified step by step guidance

1. Recall the definition of density in chemistry: Density is a physical property that relates the amount of mass an object has to the space it occupies.
2. Identify the two quantities involved in density: mass (usually measured in grams) and volume (usually measured in cubic centimeters or milliliters).
3. Understand that density is calculated by dividing mass by volume, which can be expressed as the formula: \(\text{Density} = \frac{\text{Mass}}{\text{Volume}}\).
4. Recognize that the other options (length and area, moles and molar mass, temperature and pressure) do not represent the relationship defined by density.
5. Conclude that the correct relationship defining density is between mass and volume.