ALKANES AND ALKENES

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How do you split up long-chain hydrocarbons?
Cracking
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What type of reaction is cracking?
Thermal decomposition
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Explain the cracking process
HEAT long-chain hydrocarbon to VAPORISE it, pass the vapour over a HOT CATALYST
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What are the products of cracking?
Alkanes and Alkenes
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Why is an alkene an unsaturated hydrocarbon?
It has a C=C double bond
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What is special about the C=C double bond?
The double bond can open up which allows the two carbon atoms to bond with other atoms
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What are the first five alkenes?
Methene, Ethene, Propene, Butene, Pentene
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What is the general formula for alkenes?
CnH2n
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How can you test for an alkene?
Adding bromine water - if the bromine water turns from orange to colourless, an alkene is present
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How do you make ethanol?
HYDRATION - react ETHENE with STEAM in the presence of a CATALYST
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How can we produce ethanol from renewable resources?
FERMENTATION - convert SUGAR in to ETHANOL using YEAST
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What is the word equation for fermenation?
Sugar -> Carbon Dioxide + Ethanol
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Other cards in this set

Card 2

Front

What type of reaction is cracking?

Back

Thermal decomposition

Card 3

Front

Explain the cracking process

Back

Preview of the front of card 3

Card 4

Front

What are the products of cracking?

Back

Preview of the front of card 4

Card 5

Front

Why is an alkene an unsaturated hydrocarbon?

Back

Preview of the front of card 5
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