there is the strong covalent bond between the carbons and hydrogens within hydrocarbon molecule and there is the inermolecular forces of attraction between different hydorcarbon molecules in the mixture
4 of 10
what is the process of separating crude oil called and how is is done?
the process is called refining and it is done by fractional distillation
5 of 10
what happens in fractional distillation?
the hydrocarbons are separated into groups with different boiling points
6 of 10
how are plastics formed?
when lots of small molecules called monomers join together to make a long molecule called a polymer
7 of 10
how can a polymer be made stronger?
cross links can be added, they bond the chains together making them stronger, stiffer and more heat resistant
8 of 10
how can a polymer be made softer?
plasticisers can be added, they get in between the polymer chains and reduce the forces between them
9 of 10
what are the properties of a crystalline polymer?
a crystalline polymer has straight chains with no branches so the chains fit close together, they have a higher density, are stronger and have a higher melting point
10 of 10
Other cards in this set
Card 2
Front
what is compressive strength?
Back
how much a material can resist a pushing force
Card 3
Front
what is crude oil?
Back
Card 4
Front
what are the two types of bond in crude oil?
Back
Card 5
Front
what is the process of separating crude oil called and how is is done?
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