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C9 - Crude Oil and Fuels

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Total cards: 13•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (13)

#1
Front (Question)

define: hydrocarbon

Back (Answer)

molecules made from hydrogen and carbon

#2
Front (Question)

describe properties of hydrocarbons as polymers become longer

Back (Answer)

• boiling point = increases • viscosity = increases • flammability = decreases

#3
Front (Question)

word equation combustion of hydrocarbon

Back (Answer)

oxygen + hydrocarbon → carbon dioxide + water

#4
Front (Question)

method used to seperate crude oil

Back (Answer)

fractional distillation

#5
Front (Question)

testing for carbon dioxide combustion of hydrocarbon

Back (Answer)

limewater - turns cloudy/milky

#6
Front (Question)

substance formed in incomplete combustion

Back (Answer)

carbon monoxide

#7
Front (Question)

testing for water combustion of hydrocarbon

Back (Answer)

blue cobalt chloride paper in a U tube - turns pink

#8
Front (Question)

define cracking

Back (Answer)

breaking large hydrocarbon molecules down into smaller molecules

#9
Front (Question)

list and describe 2 processes of cracking

Back (Answer)

• catalytic cracking - passed over a hot catalyst (550) • steam cracking - mixed with steam to a very high temperature (800)

#10
Front (Question)

define unsaturated hydrocarbon

Back (Answer)

a hydrocarbon that has atleast one C=C double bond, like an alkene or a C≡C triple bond

#11
Front (Question)

test for alkenes (unsaturated)

Back (Answer)

orange bromine water - turns colourless

#12
Front (Question)

Are alkenes more or less reactive than alkanes?

Back (Answer)

alkenes > alkanes in terms of reactivity

#13
Front (Question)

Why is cracking useful?

Back (Answer)

Large hydrocarbons have little use, so cracking breaks them down into more useful smaller molecules that are used for fuels