HELP - GCSE SCIENCE EARTH MATERIALS

[mikeman150]

Hi

I'm in desprate need of help, can someone please tell me the meanings of:

Fractional Distillation of Crude oil.
Naphtha
Alkane
Alkene (not the same as above, if u thought take a closer look lol)
Polymer
Monomer
Polymerisation
Addition Polymerisation.Help me plezzzzzzzzzzzz!

[Michael.]

Google is your friend ;)

Edit: Got bored and did em for ya. A thanks would be quite nice :p

Fractional Distillation of Crude oil - The process where oil is heated to different temperatures to extract molecules of the same size
Naphtha - A substance like petrol. Distilled from Crude Oil
Alkane - A chain of hydrocarbons. Diagram:


H H
| |
H-C-C-H
| |
H H

Alkene - A chain of Hydrocarbons with double bonds making it more unstable than Alkanes. Diagram.


H H
\ /
H-C=C-H
/ \
H H

Polymer - A long molecule made up of a chain of smaller, simpler molecules.
Monomer - A molecule that can combine with others to form a polymer.
Polymerisation - The bonding of two or more monomers to form a polymer.
Addition Polymerisation. - A polymerisation Technique where monomer molecules add onto a growing polymer chain one at a time.