Additional polymers

Question 1

What 2 catergories can we divide polymers?

Answer 1

= additional polymers
= condensation polymers

Question 2

What are polymers?

Answer 2

= large molecules
= joining together thousands of small identical molecules- monomers

Question 3

What are the monomers that additional polymers are made from?

Answer 3

= alkenes

Question 4

What does polymerisation require?

Answer 4

= high temperatures
= high pressure
= catalyst

Question 5

What happens when alkenes form a polymer?

Answer 5

= double bond in the alkene breaks
= and joins one monomer to the oter=

Question 6

How are these polymers named?

Answer 6

= using the word poly (name of monmer in brackets-

Question 7

What does the polymer not have compared to the alkene?

Answer 7

= no double bonds
= in carbon backbone
= alkanes
= contain alrge c-c and c-h bonds- non polar and strong, difficult to break
= unreactive molecules
= can exist in environment for a long tme

Question 8

What is the repeating unity?

Answer 8

shows arrangement of atoms that are repeated in a polymer chain
= take any two carbon atoms plus atoms below and above
= draw square brackets
= draw covalwnt bonds from the carbon atoms extenfin rhgouh sqaure vrakcets
= show how many
or n

Question 9

How do we draw the original monomoer?

Answer 9

= take any 2 carbon atoms and the atoms above and below
= replace single bond between carbon atoms with double bond

Question 10

What is the role of plasticisers?

Answer 10

= poly(chloroethane) PVC
= rigid, used to make plastic pipes
= if we add plastisicer
= priduce flexible pv: soft, used to make flooring and insolution in electric cables, polumer chains are attracted togetner by intermolecylae forces of attractio- dipole dipole and vandwerall force
s= plasticiers fit in betwen polymer chains- causes chains to move further apart and weakens intermolecular forces and move over each other,