why are rubber called elastomers?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Rubber**: Rubber is a natural or synthetic polymer that exhibits elastic properties. It can stretch significantly when a force is applied and return to its original shape once the force is removed.

2. **Understanding Elastomers**: The term "elastomer" is derived from the words "elastic" and "polymer." Elastomers are a class of polymers that have elastic properties, meaning they can undergo considerable deformation under stress and return to their original shape upon the removal of that stress.

3. **Elastic Behavior**: The key characteristic of rubber (and elastomers in general) is their ability to deform elastically. This means that when a force is applied, the material stretches or compresses, and when the force is removed, it recovers its original dimensions.

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