Which of the following best describes density as a property?

• A. Density is an extensive property.
• B. Density is an intensive property.
• C. Density is neither intensive nor extensive.
• D. Density is both intensive and extensive.

Answer: (B)

Verified step by step guidance

1. Recall the definitions of intensive and extensive properties: Intensive properties do not depend on the amount of substance present, while extensive properties do depend on the amount of substance.
2. Understand that density is defined as mass per unit volume, expressed as \(\text{density} = \frac{\text{mass}}{\text{volume}}\).
3. Since both mass and volume are extensive properties (they depend on the amount of substance), consider how their ratio behaves when the amount of substance changes.
4. When you increase the amount of substance, both mass and volume increase proportionally, so their ratio (density) remains constant.
5. Therefore, density does not depend on the amount of substance and is classified as an intensive property.