Question

Which of the following is an extensive property of a system?

• A. Density
• B. Pressure
• C. Temperature
• D. Total mass

Hint:

Extensive properties add up when subsystems are combined (e.g., mass, energy, volume), while intensive properties remain unchanged (e.g., temperature, pressure).

Answer 1

The Correct Option is D

Step 1: Classification of properties.
- Extensive properties: Depend on the size/extent of the system (e.g., mass, volume, total energy). - Intensive properties: Independent of system size (e.g., temperature, pressure, density).
Step 2: Evaluate options.
- Density → Intensive. - Pressure → Intensive. - Temperature → Intensive. - Total mass → Extensive. Thus, only Total mass is extensive. Final Answer: \[ \boxed{\text{Total mass (Option D)}} \]