What is vulcanization and when it is done?

Explanation

### Step-by-Step Text Solution

**Step 1: Define Vulcanization**
Vulcanization is a chemical process that involves the heating of raw rubber with sulfur. This process creates cross-links between the rubber molecules, enhancing the material's properties.

**Step 2: Explain the Process**
The vulcanization process typically occurs at a temperature range of 373 K to 415 K (approximately 100°C to 140°C). During this process, sulfur atoms form linkages between the long chains of rubber molecules, which results in a more stable and durable material.

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