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C1b. ­ oils, Earth and Atmosphere
4. Products of oil

C1b 4.1 ­ Cracking hydrocarbons
We can split large hydrocarbons molecules up into smaller
molecules by heating them up and passing the gas through a
catalyst.
It is called catalytic cracking and takes place in a cat cracker.
Cracking produces…

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different conditions. HDPE can stronger intermolecular forces
than LDPE because there is no oxygen inside them, therefore
they can pack tightly together.
A thermosetting plastic is a polymer which sets permanently
when it is formed by heating the monomers of which it is made.
This makes chemical bonds in between…

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