Explanation:
- Rubber is a polymer, to be sure. It's an elastomer polymer that can revert to its original shape after being deformed or stretched.
- Rubber's ability to stretch its links apart gives it considerable elasticity.
- They are found in a linear form when stretched.
- When the rubber is loosened, it has wrinkled chains that change randomly and form a disordered cluster.
Hence, rubber is a polymer.