Question

Identify from the following an example of intensive property.

• A. Surface tension
• B. Volume
• C. Internal energy
• D. Number of moles

Hint:

Remember, intensive properties are independent of the amount of material present, while extensive properties are dependent on the system size.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
Properties are classified into two types:
1. Extensive: Depends on the amount of matter present.
2. Intensive: Independent of the amount of matter present.
Step 2: Detailed Explanation:
(A) Surface tension: It is a characteristic property of a liquid at a given temperature and does not change with the volume or mass of the liquid. Thus, it is an intensive property.
(B) Volume: The space occupied increases as the amount of matter increases. It is an extensive property.
(C) Internal energy: Total energy is the sum of energies of individual particles; more particles mean more total energy. It is an extensive property.
(D) Number of moles: Directly represents the quantity of substance. It is an extensive property.
Step 3: Final Answer:
Surface tension is an intensive property.