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Chemistry
Polymers and Polyesters (Section 6)
Question | Answer |
---|---|
What name is given to the small molecules that combine together to form a polymer? | Monomers |
What types of hydrocarbon combine in addition polymerisation? | Alkenes |
The monomers that make up polymers have a ____________ bond | double covalent |
What 2 conditions are required during addition polymerisation? | 1. Catalyst 2. Pressure |
How do we get the name of a polymer? | Put brackets around the monomer name and put 'poly' in front of it |
How do we get the formula for a polymer? | Put brackets around the formula for the monomer and put an 'n' after it |
Most addition polymers don't react easily, making them ______ | inert |
Why are most addition polymers inert? | The carbon-carbon bonds are very strong and difficult to break |
Addition polymers take a very long time to __________ | biodegrade |
Why is it not a good idea to burn addition polymers? | It releases toxic gases |
What type of polymer is biodegradable? | Condensation polymers |
Why are condensation polymers biodegradable? | Ester links can be broken down by microorganisms |
How many types of monomer does condensation polymerisation usually involve? | 2 |
In condensation polymerisation, each monomer has to contain at least how many functional groups? | 2, one on the end of each molecule |
Polyesters form when _________ monomers and _________ monomers react together | dicarboxylic acid, diol |
Dicarboxylic acid monomers contain two ________ groups | carboxylic acid |
Diol monomers contain two _______ groups | alcohol |
In condensation polymerisation, the carboxylic acid group reacts with the alcohol group to form what? | An ester link |
Some polyesters are ___________, reducing their pollutant effect | biodegradable |
Why do addition polymers not biodegrade easily? | They are inert |