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- 1. Multiple Choice
What term is given to a compound which contains atoms of carbon and hydrogen only?
alkene
hydrocarbon
alkane
saturated
- 2. Multiple Choice
What term describes alkene molecules that contain a C=C double bond?
saturated
unsaturated
- 3. Multiple Choice
Alkanes have the general formula:
CnH2n
CnH2n+1
CnH2n+2
CnHn
- 4. Multiple Choice
What term describes alkane molecules that contain C-C single bonds?
saturated
unsaturated
- 5. Multiple Choice
What process is used to separate crude oil in hydrocarbons with different chain lengths?
distillation
fractional distillation
cracking
polymerisation
- 6. Multiple Choice
Where in the fractionating column are shorter chain hydrocarbon molecules obtained?
At the top
At the bottom
- 7. Multiple Choice
Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture
melting point
boiling point
freezing point
chemical reactivity
- 8. Multiple Choice
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
- 9. Multiple Choice
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
- 10. Multiple Choice
What are the 2 products of complete combustion?
carbon dioxide + hydrogen
carbon dioxide + water
carbon monoxide + water
carbon monoxide + hydrogen
- 11. Multiple Choice
What are the products of incomplete combustion?
carbon monoxide
water
carbon
hydrogen
- 12. Multiple Choice
What does a fuel react with when it burns?
oxygen
water
carbon dioxide
methane
- 13. Multiple Choice
What conditions are needed for cracking?
high temperature
high pressure
catalyst
low temperature
- 14. Multiple Choice
Name the following hydrocarbon
alkane
pentene
pentane
alkene
- 15. Multiple ChoicePetroleum and natural gas form from...strong windscooled magmaradioactive materialsremains of plants and animals
- 16. Multiple ChoiceFossil Fuels formed over long periods of time after particles in water settled to the sea floor and formed marine mud. What kinds of particles needed to be present in the marine mud in order for fossil fuels to form.Mostly sand and a few small bits of woodMostly decaying organismsMostly lava and a few sedimentary rocksMostly metal minerals
- 17. Multiple ChoiceWhich of these is not a fossil fuel?CoalOilOlive OilNatural Gas
- 18. Multiple ChoiceWhich of the following compounds is an example of hydrocarbon?CO2C2H6C2H5OHCH3COOH
- 19. Multiple Choice
A fraction of crude oil is made up of:
Hydrocarbons of similar chain lengths
Numbers
Large hydrocarbons
Alkenes only
- 20. Multiple Choice
Different fractions in crude oil are separated by:
Cracking
Fractional Distillation
Filtration
Crystalisation
- 21. Multiple Choice
Shorter hydrocarbons have:
Higher boiling points
Lower boiling points
- 22. Open Ended
a. Write a balanced chemical equation for the reaction between methane and enough oxygen.
b. what type of reaction is this?
- Answer choicesTagsAnswer choicesTags