Addition polymerisation Flashcards
polymerisation
high pressure and temperature alkenes can be polymerised
monomer to polymer
n alkene -> [part of alkane]n
what is addition polymerisation
molecules added together to make a chain
environmental harm of plastics
inert so non biodegradable will not break down in the environment
crude oil non renewable
cracking
breaking down a long chain alkane to a short chain alkane and alkene to make a profit. short chain alkanes more useful and more profitable and alkene can be made into plastic
catalytic cracking
catalyst silica SiO2 or alumina Al2O3 and temperature 600-700C
how to do cracking
boiling tube with mineral wool soaked in a liquid hydrocarbon and the catalyst silica/alumina. bung boiling tube fill boiling tube with water and place over tub of water. Heat wool and bubble into boiling tube. Test with bromine water