C1.5 Products from oil
- Created by: frankie306
- Created on: 02-06-15 19:08
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- C1.5 Products from oil
- Cracking hydrocarbons
- cracking
- breaking down large hydrocarbon molecules
- cracker - steel vessel which process takes place in
- a heavy faction is heated to vaporise hydrocarbons
- vapour is passed over the hot catalyst or mixed with steam
- hydrocarbons crack as thermal decomposition takes place
- alkene
- unsaturated molecules
- double bonds
- react with orange bromine water
- colourless
- alkane
- saturated
- cracking
- polymers from alkenes
- plastics
- monomers
- small molecules that make polymers
- polymers
- made when monomers join together
- polymerisation
- made when monomers join together
- ethane - C2H4
- smallest unsaturated hydrocarbon
- poly(ethane) - strong + transparent
- plastic bas / drink bottles
- Propane - C3H6
- poly(propane) - strong + tough
- carpets / milk crates
- monomers
- plastics
- New polymers
- light sensitive plasters
- light sensitive polymer is used so that once lower layer is exposed to light adhesive becomes less sticky
- hydrogels
- polymer chains with few cross linking units
- traps water
- wound dressings
- smart polymers
- one that changes in response to changes around it
- old polymers can be used for recycling
- light sensitive plasters
- plastic waste
- biodegradable - can be broken down by microorganisms
- adding starch
- takes up space needed for food
- recycling
- takes up space
- hard to separate nto different types
- biodegradable - can be broken down by microorganisms
- ethanol
- member of alcohols
- C2H5OH
- fermentation
- sugar =yeast=> ethanol + carbon dioxide
- enzymes break down sugar
- used as a solvent
- methylated spirit - mainly ethanol
- hydration
- ethane + steam => ethnol
- energy is needed to heat the gases + create high pressure
- continuous process + no waste is produced
- ethene = non-renewable
- Cracking hydrocarbons
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