C1, Alkenes

Created by: emmajane_
Created on: 27-05-14 16:26

What is cracking?

It breaks down large hydrocarbons into smaller and more flammable molecules

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After the hydrocarbon have been heated and vapourised in the fraction, which two possibilities could follow? WHat is the purpose of these stages?

1. passed over a hot catalyst 2. Mixed with steam and heated to a high temperature This breaks down molecule, causing thermal decompostion

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What is the formula for Alkenes?

CnH2n

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What are alkenes?

Unsaturated hydrocarbons with double covalent bonds joining the two carbon molecules

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Why can alkenes be used as fuels?

Becuase they can react with oxygen in the air

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Name 3 things that alkenes can be used for

Fuel, ethanol and polymers (plastics)

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How can you test for unsaturation?

Bromine water, which is mormally an orange-brown becomes colourless when shaken with an alkene, but remains the same colour when shaken with an alkane

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What is ethene polymerised to form?

Polyethene

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Other cards in this set

Card 2

Front

After the hydrocarbon have been heated and vapourised in the fraction, which two possibilities could follow? WHat is the purpose of these stages?

Back

1. passed over a hot catalyst 2. Mixed with steam and heated to a high temperature This breaks down molecule, causing thermal decompostion

Card 3

Front

What is the formula for Alkenes?

Back

Card 4

Front

What are alkenes?

Back

Card 5

Front

Why can alkenes be used as fuels?

Back

View more cards

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C1, Alkenes