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WorksheetsCrude Oil and Hydrocarbons
Total questions: 22
Worksheet time: 13mins
What term is given to a compound which contains atoms of carbon and hydrogen only?
alkene
hydrocarbon
alkane
saturated
What term describes alkene molecules that contain a C=C double bond?
saturated
unsaturated
Alkanes have the general formula:
CnH2n
CnH2n+1
CnH2n+2
CnHn
What term describes alkane molecules that contain C-C single bonds?
saturated
unsaturated
What process is used to separate crude oil in hydrocarbons with different chain lengths?
distillation
fractional distillation
cracking
polymerisation
Where in the fractionating column are shorter chain hydrocarbon molecules obtained?
At the top
At the bottom
Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture
melting point
boiling point
freezing point
chemical reactivity
Molecules collected at the bottom of the fractionating column tend to be...
more viscous, less flammable and less volatile
less viscous, more flammable and more volatile
more viscous, more flammable and less volatile
less viscous, less flammable and more volatile
Molecules collected at the top of the fractionating column tend to be...
more viscous, less flammable and less volatile
less viscous, more flammable and more volatile
more viscous, more flammable and less volatile
less viscous, less flammable and more volatile
What are the 2 products of complete combustion?
carbon dioxide + hydrogen
carbon dioxide + water
carbon monoxide + water
carbon monoxide + hydrogen
What are the products of incomplete combustion?
carbon monoxide
water
carbon
hydrogen
What does a fuel react with when it burns?
oxygen
water
carbon dioxide
methane
What conditions are needed for cracking?
high temperature
high pressure
catalyst
low temperature
Name the following hydrocarbon
alkane
pentene
pentane
alkene
A fraction of crude oil is made up of:
Hydrocarbons of similar chain lengths
Numbers
Large hydrocarbons
Alkenes only
Different fractions in crude oil are separated by:
Cracking
Fractional Distillation
Filtration
Crystalisation
Shorter hydrocarbons have:
Higher boiling points
Lower boiling points
a. Write a balanced chemical equation for the reaction between methane and enough oxygen.
b. what type of reaction is this?
