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Carbon Compounds
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2
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9
15
16
22
3
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23
4
11
18
24
2a
Int 2
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What is a fuel?
A substance which is burned
to produce energy.
Give another word
for burning?
Combustion
When a substance burns what is it
reacting with?
Oxygen
Name the type of compound found
in oil and natural gas.
Hydrocarbons
What is a hydrocarbon?
A compound which contains
hydrogen
and carbon
only.
Name the two products formed when
a hydrocarbon burns in a plentiful
supply of oxygen
(complete combustion)
Carbon dioxide and water
What is the test for carbon dioxide?
Limewater turns milky
Name the poisonous gas produced
when a hydrocarbon burns in a
limited supply of oxygen
(incomplete combustion).
Carbon monoxide
What is produced when nitrogen and
oxygen from the air react inside a
petrol engine?
Oxides of nitrogen
which are poisonous
What causes nitrogen and oxygen
from the air to react inside a petrol
car engine?
Spark
Why is it dangerous to burn fuels
containing sulphur compounds?
Sulphur dioxide is
produced
(a poisonous gas)
Name the harmful particles
produced by the incomplete
combustion of diesel.
Soot
What does a catalytic converter do?
Converts pollutant gases into
harmless gases.
Carbon monoxide into carbon dioxide
Oxides of nitrogen into nitrogen
Name the type of chemicals
compounds found in crude oil.
Hydrocarbons
Name the process used to
separate crude oil into fractions.
Fractional distillation
What is a fraction?
A mixture of hydrocarbons
with similar boiling points
What property allows the
hydrocarbons to be separated by
fractional distillation?
They have different
boiling points
Which size of hydrocarbon
molecules have the largest
boiling point?
largest molecules as the molecules become
larger the boiling point
increases.
Describe what happens to ease of
evaporation, viscosity and
flammability as the molecular size
increases.
As the molecular size increases
- ease of evaporation decreases
- more viscous(thicker)
- less flammable
Why is lubricating oil more
viscous than petrol?
Lubricating oil contains longer
hydrocarbons than petrol.
Is air a mixture of gases or a
compound?
A mixture of gases
Name the gas which turns
lime water milky?
Carbon dioxide
What is the test for oxygen gas?
Relights a glowing splint
Why should sulphur dioxide not be
released into the atmosphere?
It causes acid rain
Give a use for the residue fraction.
Tar for roads/roofing
Approximately how many carbon
atoms are in the hydrocarbon
molecules used to make petrel?
8 carbons
C8H18
Carbon Compounds 2a
1
2
3
10
8
9
15
16
22
4
11
17
23
18
24
Int 2
5
6
7
12
13
14
19
25
20
26
21