Hydrocarbons are named after what they are made up of. The beginning of the name comes from how many carbon atoms it has in its longest chain of carbons.
1 - meth 2 - eth
3 - prop 4 - but
5 - pent 6 - hex
7 - hept 8 - oct
9 - non 10 - dec
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Alkanes
Only contain single carbon-carbon bonds
Only contain carbon and hydrogen atoms
-ane endings
Saturated
Change colour when reacted with bromine water
General formula:
Display formula example
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Alkenes
Contain at least one carbon-carbon bond
Only contain hydrogen and carbon atoms
-ene endings
Unsaturated
Remaine colourless when reacted with bromine water
General formula:
Display formula example
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Alcohols
Contain an oxygen atom (has an O-H group)
Contains only carbon-carbon single bonds.
Display formula example:
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Branched Chains
Methyl group: CH3 -
2-methylpropane (diagram)
The number shows on what carbon it is branching off of.
There can be different isomers of the same chemical formula but have a different structural formula. eg. pentane.
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Crude Oil
Crude oil is separated into fractions by fractional distillation in a fractionating column.
Diagram:
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Polymerisation 1
Polymerisation is the reaction of monomers to form polymers.
Addition Polymerisation
- Can only be done with alkenes because they have double bonds/a double bond.
PVC - polyvinylchloride:
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Polymerisation 2
Condensation Polymerisation
Two different monomers joined together
Linked by eliminating small molecules.
1. Nylon - polyamide
2. Terylene - polyester
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Disposal of Non-biodegradable polymers/plastics
- Burning
adv: doesn't take up space
dis: pollution, cost
- Landfill
adv: less pollution
dis: smells, takes up space, harmful to environment
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