Rubber

Rubber is a polymer, which is a large molecule composed of repeating structural units. It is a natural substance that is harvested from the rubber tree, Hevea brasiliensis, as latex. Synthetic rubber is also produced through the polymerization of monomers.

Structure of Rubber

The basic structure of rubber is a long chain of carbon atoms, with two hydrogen atoms attached to each carbon. This is known as a polyisoprene chain. The double bonds in the polyisoprene chain give rubber its elasticity.

Properties of Rubber

Elasticity: Rubber is known for its high elasticity, allowing it to return to its original shape after being stretched or compressed.
Insulation: Rubber is a good insulator of both electricity and heat.
Waterproof: Rubber is impermeable to water and is often used in waterproofing materials.
Resilience: Rubber can withstand repeated stress and still retain its original shape and properties.

Uses of Rubber

Rubber has a wide range of applications in various industries, including:

Automotive industry: tires, belts, hoses
Medical industry: gloves, tubing, seals
Construction industry: seals, gaskets, insulation
Consumer goods: footwear, toys, erasers
Industrial machinery: conveyor belts, shock absorbers

Study Guide

When studying the topic of rubber, consider the following key points:

Understand the structure of rubber at the molecular level, including the arrangement of carbon and hydrogen atoms in the polyisoprene chain.
Learn about the properties of rubber, such as elasticity, insulation, waterproofing, and resilience, and how these properties make it suitable for various applications.
Explore the differences between natural rubber and synthetic rubber, including their production processes and uses.
Examine the environmental impact of rubber production and the efforts to develop sustainable alternatives.
Research the historical and cultural significance of rubber, including its role in the development of industries and its impact on global trade.

By understanding the structure, properties, uses, and impact of rubber, you can gain a comprehensive understanding of this important material.

◂Chemistry Worksheets and Study Guides High School. Matter and Energy

The resources above cover the following skills:

PHYSICAL SCIENCE (NGSS)

Matter and Its Interactions

Students who demonstrate understanding can:

Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

Energy

Students who demonstrate understanding can:

Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as either motions of particles or energy stored in fields.