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crude oil and hydrocarbons
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Cards (31)
What should you be able to describe by the end of the video?
How
crude oil
is
formed
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What is meant by a hydrocarbon?
Molecules made of
hydrogen
and carbon
atoms
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What is an alkane?
A type of
hydrocarbon
with specific properties
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What products are derived from crude oil?
Plastics
Petrol
Pharmaceuticals
Cosmetics
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How is crude oil formed?
From
remains
of tiny
sea creatures
buried in mud
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What is the nature of crude oil as a resource?
It is a
finite
resource
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What are hydrocarbons?
Molecules made up of
hydrogen
and carbon atoms
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What is the formula for methane?
CnH2n+2
otherwise known as hydrogen= 2 x (number of carbons + 2
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How many carbon atoms are in methane?
One
carbon atom
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How many hydrogen atoms are in butane?
Four hydrogen atoms
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What are covalent bonds?
Bonds between
atoms
sharing
electrons
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What is the definition of a hydrocarbon?
Molecules made up of
hydrogen
and carbon atoms only
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What is the general formula for alkanes?
C<sub>n</sub>H<sub>2n+2</sub>
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If n equals 2, how many hydrogen atoms are in ethane?
Six
hydrogen atoms
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How many hydrogen atoms are in propane with three carbon atoms?
Eight
hydrogen atoms
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How many hydrogen atoms are in butane with four carbon atoms?
Ten
hydrogen atoms
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Why are alkanes considered saturated molecules?
Because
carbon atoms
are fully bonded to
hydrogen
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Which alkane structures should you memorize for the exam?
Methane
Ethane
Propane
Butane
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Where can you find more questions on hydrocarbons?
In the
revision workbook
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What is the significance of the general formula for alkanes?
It helps calculate
hydrogen
atoms from
carbon
atoms
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what is viscosity
thickness
of a fluid
as the size of the hydrocarbons increase what happens to the flow
it
slows
down
high viscosity means that flow is what?
slow
what is flammability
how easily a
hydrocarbon
combusts
(burns)
what chain of hydrocarbons are the most flammable
short chain
short chain hydrocarbons have what type of boiling point?
low
boiling point
what four
hydrocarbons
are gases at room temperature
methane
ethane
propane
butane
if a hydrocarbon has 3 carbon atoms what’s it called?
Propane
if a hydrocarbon has 2 carbone what’s it called?
ethane
if a hydrocarbon has 1 carbon atoms what’s it called?
Methane
if a hydrocarbon has 4 carbon atoms what’s it called?
butane
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