Polymers

HideShow resource information
Weak Forces: Individual tangeled chains of polymers are held together by...
weak intermolecular forces and are free to slide over each other
1 of 8
THERMOSOFTENING POLYMERS don't have cross-linking between chains and the forces...
between the chains are easy to over come
2 of 8
This means it is easy to melt plastic and when it cools, the polymer...
hardens into a new shape (you can remould over and over again)
3 of 8
Strong Forces: Some platics have stronger intermolecuar forces between the polymer...
chains called crosslinks, that firmly hold them together
4 of 8
THERMOSETTING POLYMERS have crosslinks that hold the chains together in a...
solid structure
5 of 8
The polymer doesn't soften when heated and are hard...
strong and rigid
6 of 8
Low Density polymers are made from heating ethene to...
200 oc under high pressure and is flexible
7 of 8
High Denity polymers are made at lower temperatures and...
pressure with a catalyst and is more rigid
8 of 8

Other cards in this set

Card 2

Front

between the chains are easy to over come

Back

THERMOSOFTENING POLYMERS don't have cross-linking between chains and the forces...

Card 3

Front

hardens into a new shape (you can remould over and over again)

Back

Preview of the back of card 3

Card 4

Front

chains called crosslinks, that firmly hold them together

Back

Preview of the back of card 4

Card 5

Front

solid structure

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms and compounds resources »