C1.5.1 Cracking dys. C1 5.1 cracking expt. C1 5.2 polymerisation dys. Polymers Revision Sheet dys. Polymers poster dys. Monomers + polymers sheet. Educational Service. C1 5.3 plastic waste dys. Thermsoftening + thermosetting. C1 5.4 ethanol. Ethanol. Ethanol Worksheets.