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20 Cards in this Set
- Front
- Back
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Polymer |
A large, complex molecule built from smaller molecules joined together in a repeating pattern. |
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Monomer |
One of the smaller molecules from which polymers are built.
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Natural Polymer |
A polymer created in nature like the protein in meats, eggs, and starches in pancakes, cellulose, snake venom, spider's silk, etc. that rely on carbon for their fundamental structures. |
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Manufactured or Synthetic Polymers |
A polymer that is man made like polyester and nylon clothing, plastics which rely on carbon for their fundamental structures. |
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How do polymers form? |
when chemical bonds link large numbers of monomers in a repeating pattern. |
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What do all polymers have in common? |
All are made of carbon compounds |
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What properties allows carbon's unique ability to form so many compounds? |
A carbon atom can form 4 bonds and and it can bond to other carbon atoms in a straight, branched chains and ring groups |
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How many bonds can a carbon atom form? |
4 |
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What is cellulose? |
A flexible but strong natural polymer found in the cell walls of fruits and vegetables. (Humans cannot digest it) |
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How is cellulose made? |
it is made in plants when sugar molecules are joined into long strands. |
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Examples of polymers in the human body |
Fingernails and muscles are made of polymers called proteins. |
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Examples of monomers in the human body |
Amino Acids |
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Amino Acids |
A monomer that can form different body parts (polymer= proteins) depending on which ones are used and in what order. |
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Plastics |
are synthetic polymers that can be molded or shaped, are the most common products. |
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Composite |
combines two or more substances in a new material with different properties. |
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What are composites made of ? |
Made of one or more polymer. Putting two different materials together to get the advantages of both. |
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Examples of synthetic composites |
Fiberglass |
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Examples of natural composites |
Wood (is made of cellulose which is flexible and lignin which is brittle to form a stronger substance) Bone in our body. |
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Benefits of synthetic polymers |
are inexpensive to make, strong, and last a long time. |
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Problems that relate to using synthetic polymers |
It is often cheaper to throw plastics away and make new ones than it is to reuse them. As a result, plastics increase the volume of trash. They don't break down or degrade. |
