Which are extensive properties?

Options

A. V & E
B. V & T
C. V & Cp
D. P and T

Explanation

To determine which properties are extensive, we first need to understand the difference between extensive and intensive properties.

### Step-by-Step Solution:

1. **Define Extensive and Intensive Properties**:
- **Extensive Properties**: These properties depend on the amount of substance present. Examples include mass, volume, internal energy, heat capacity, and surface area.
- **Intensive Properties**: These properties do not depend on the amount of substance present. Examples include temperature, pressure, density, and viscosity.

2. **Identify Examples of Extensive Properties**:
- Mass: The amount of matter in a substance.
- Volume: The space occupied by a substance.
- Internal Energy: The total energy contained within a system.
- Heat Capacity: The amount of heat required to change the temperature of a substance.
- Surface Energy: The energy at the surface of a material.

3. **Analyze the Options Given in the Question**:
- **Option A: Volume and Energy**: Both volume and internal energy are extensive properties.
- **Option B: Volume and Temperature**: Volume is extensive, but temperature is intensive.
- **Option C: Volume and Heat Capacity**: Both volume and heat capacity are extensive properties.
- **Option D: Pressure and Temperature**: Both pressure and temperature are intensive properties.

4. **Conclusion**:
- The options that contain only extensive properties are A (Volume and Energy) and C (Volume and Heat Capacity).

### Final Answer:
The extensive properties from the options provided are:
- Option A: Volume and Energy
- Option C: Volume and Heat Capacity