Normal Rubber Does Not Maintain Its Elasticity When Heated, but Vulcanized

question 57

Multiple Choice

Normal rubber does not maintain its elasticity when heated, but vulcanized rubber does. What is the cause of the heat insensitivity?

• A) the nitrocellulose that was used to create it.
• B) the sulfur that was used to link polymer strands.
• C) the presence of unsaturation in the polymer backbone.
• D) the regular, crystalline regions within the polymer.
• E) All of the above

---

Definitions:

Tangible Effect

A clear and definite impact or result that can be physically observed or measured.

Barriers

Obstacles that prevent movement, access, or progress.

Communication

The process of exchanging information, ideas, thoughts, feelings, and messages between individuals or groups.

Information Processing

The methods by which individuals perceive, analyze, manipulate, store, and recall information in their brain.