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Weak forces
individual tangled chains of polymers, held together by weak intermolecular forces, they are free to slide over each other.
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Strong forces
some plastics have strong inter molecular forces between the polymer chains, called cross links, that hold the chains firmly together.
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Thermosoftening Polymers
Dont have cross-links, easy to melt, you can melt and remould them as many times as you want
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Thermosetting polymers
have crosslinks, a solid structure, it doesnt soften when heated, there strong hard and rigid.
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Properties
Low density:is made by heating etheneto 200 degrees under high pressure, it is flexible, used for bags and bottles.
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Other cards in this set

Card 2

Front

some plastics have strong inter molecular forces between the polymer chains, called cross links, that hold the chains firmly together.

Back

Strong forces

Card 3

Front

Dont have cross-links, easy to melt, you can melt and remould them as many times as you want

Back

Preview of the back of card 3

Card 4

Front

have crosslinks, a solid structure, it doesnt soften when heated, there strong hard and rigid.

Back

Preview of the back of card 4

Card 5

Front

Low density:is made by heating etheneto 200 degrees under high pressure, it is flexible, used for bags and bottles.

Back

Preview of the back of card 5

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