State whether the following statements are true or false: Formation of clouds is a slow, desirable and reversible physical change.

Answer

To determine whether the statement "Formation of clouds is a slow, desirable, and reversible physical change" is true or false, we can analyze each part of the statement step by step.

### Step-by-Step Solution:

1. **Understanding Cloud Formation:**
- Clouds are formed when water vapor, which is an invisible gas, cools down and condenses into tiny liquid water droplets. This process occurs in the atmosphere.

**Hint:** Think about the process of condensation and how water vapor changes state.

2. **Identifying the Type of Change:**
- The change from water vapor to liquid water droplets is a physical change. In a physical change, the substance changes its state (from gas to liquid) but does not form a new substance.

**Hint:** Recall the definition of physical change and how it differs from chemical change.

3. **Reversibility of the Change:**
- The process is reversible. This means that the liquid water droplets can evaporate back into water vapor. Since both transitions (vapor to liquid and liquid to vapor) can occur, we classify this as a reversible change.

**Hint:** Consider whether you can return to the original state after the change has occurred.

4. **Speed of the Change:**
- The formation of clouds is generally a slow process. It takes time for water vapor to condense and form droplets that gather to create clouds.

**Hint:** Think about how weather changes and how clouds form over time.

5. **Desirability of the Change:**
- The term "desirable change" refers to changes that are beneficial or favorable, often occurring naturally. Cloud formation is a natural process that is essential for weather patterns and precipitation, making it a desirable change.

**Hint:** Reflect on the importance of clouds in nature and their role in the water cycle.

6. **Conclusion:**
- Since all parts of the statement are true (cloud formation is a slow process, it is a desirable change, and it is a reversible physical change), we conclude that the statement is **true**.

### Final Answer:
The statement "Formation of clouds is a slow, desirable, and reversible physical change" is **True**.

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