Lesson 8: Addition/ Condensation poymerisation Flashcards
Which type of hydrocarbon can be used to make polymers?
- ALKENES can be used to make polymers.
By what process are alkenes used to make polymers like polyethene and polypropene?
- By addition polymerisation.
Give two examples of polymers formed from alkene molecules
- Poly(ethene)
- Poly(propene)
What happens in addition polymerisation reactions?
- In addition polymerisation reactions, many small molecules (monomers) join together to form very large molecules (polymers).
True or False
In addition polymerisation, the repeating unit (in the polymer) has different atoms as in the original monomer ie. poly(ethene)’s repeating unit has different atoms to ethene monomer.
FALSE!
In addition polymers the repeating unit has the same atoms as the
monomer because no other molecule is formed in the reaction.
How many functional groups are involved in condensation polymerisation?
-Condensation polymerisation involves (different) monomers with two functional groups.
What happens when monomers with two different functional groups react?
- They join together, losing small molecules, such as water.
Why do we call a reaction where two monomers with different functional groups join together a: condensation reaction?
- As small molecules (ie. water) are often lost in this reaction.
How are the simplest condensation polymers produced?
The simplest polymers are produced from two different monomers
with two of the same functional groups on each monomer.
What are the products of condensation reaction between ethane diol and hexanedioic acid ?
Ethane diol + hexanedioic acid —> polyester + water
What is “condensation polymerisation?”
- Condensation polymerisation involves the joining of two monomers with two functional groups.
- When the two monomers join, small molecules are lost (such as, water.)
