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

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Definitions:

Lead Arrangement

In the context of electrocardiography, lead arrangement refers to the configuration and placement of electrodes on the body to measure the heart's electrical activity.

Electrodes

Conductor materials used to make electrical contact with a nonmetal part of a circuit, often used in medical devices and experiments.

ECG

Electrocardiography, a medical test that measures the electrical activity of the heart to assess its health and function.

Lead Arrangement

Reference to the specific configuration or placement of electrodes on the body in medical procedures, particularly electrocardiography (ECG).