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Across 2. man-made fibres 7. carbon compounds with double and triple bonds 10. small molecules 12. made from clay and have a lower density than metals 16. a fine black powder used as a cosmetic by the ancient Egyptians 20. carbon compounds with single bonds 21. a group of bonded atoms within a carbon compound which behave in a particular way 24. plastics are made from it 26. a polymer used as a non-stick coating 27. chemical bonds between chains 30. a soft plastic used to make clingfilm 32. carbon compounds with triple bonds 33. to cover one metal with a thin plate of another 34. what we should do with used plastic 35. formed when silicon and oxygen join in clay

Down 1. found in most monomers 3. polymers that do not soften when heated, they char instead 4. another element found in monomer and polymers 5. meaning shiny, a property of metals 6. very large molecules made of repeating units 8. polymers which soften when heated 9. a useful property of metals 11. the chemical reactions which join monomers together 13. PVA 14. produces a shiny surface on ceramics porcelain 15. carbon compounds with double bonds 17. all compounds that contain the same functional group 18. fibres obtained from plant and animal products 19. large amounts are found in clay 22. a natural fibre 23. is produced from fine white clay 25. formed when two different monomers alternate in the chain 28. a useful property of metals 29. a polymer created by adding vinegar to milk 30. strong, lightweight and easy to mould 31. formed by mixing metals with other metals and non metals