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Polymers and composites
chapter 8 section 3
12
Science
8th Grade
05/10/2010

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Term
Polymer
Definition
a very large molecule made of a chain of many smaller moecules bonded together
Term
carbon
Definition
The structures of most polymers are built from compounds of the element _________.
Term
monomers
Definition
The smaller molecules from which polymers are built are called ___________.
Term
when chemical bonds link large numbers of monomers in a repeating pattern
Definition
How do polymers form?
Term
natural materials
Definition
Living things produce many _______ ________ made of large polymer molecules.
Term
cellulose; starches
Definition
List two polymers made by plants
Term
amino acids
Definition
in your body, proteins are assembled from monomers called _________ _______>
Term
coal and oil
Definition
The starting materials for most synthetic polymers come from ________ or _______.
Term
Plastic
Definition
synthetic polymers that can be molded or shaped, are the most common products.
Term
B/c most natural materials are too expensive or wear out too quickly
Definition
why are synthetic polymers often used in place of some natural materials.
Term
composites
Definition
combines two or more substances in a new material with different properties
Term
fiberglass
Definition
a synthetic composite made of glass fibers and a liquid paste
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