Which of the following is an intensive property?

Options

A. Density
B. Volume
C. Total heat capacity
D. Mass

Answer

To determine which of the following is an intensive property, we need to understand the difference between intensive and extensive properties.

### Step 1: Define Intensive and Extensive Properties
- **Intensive Properties**: These are properties that do not depend on the amount of substance present. Examples include density, temperature, and pressure.
- **Extensive Properties**: These are properties that do depend on the amount of substance present. Examples include mass, volume, and total heat capacity.

### Step 2: Analyze the Given Properties
Let’s analyze the properties mentioned in the question:

1. **Density**:
- Density is defined as mass per unit volume (Density = Mass/Volume).
- It remains constant regardless of the amount of substance. For example, 1 gram of water has the same density as 5 grams of water.
- Therefore, density is an **intensive property**.

2. **Volume**:
- Volume is the amount of space that a substance occupies.
- Volume changes with the amount of substance. For example, if you have more mass, you will have a greater volume.
- Therefore, volume is an **extensive property**.

3. **Heat Capacity**:
- Heat capacity is the amount of heat required to change the temperature of a substance by 1 degree Celsius.
- It depends on the amount of substance; more mass means more heat capacity.
- Therefore, heat capacity is an **extensive property**.

4. **Mass**:
- Mass is the measure of the amount of matter in an object.
- It is inherently dependent on the quantity of the substance.
- Therefore, mass is also an **extensive property**.

### Step 3: Conclusion
From the analysis, the only property that is independent of the mass of the substance is **density**.

Thus, the answer to the question "Which of the following is an intensive property?" is **density**.

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