Across
- 3. chemical reactions that join monomers together
- 5. small molecules that consist of carbon
- 6. can be used in blended petrol
- 7. formed from plant matter buried in sediments
- 9. large molecules consisting of repeating monomers
- 10. gas produced from biomass
- 12. produced from the fermentation of plant matter
- 15. polmers that char when heated
- 18. gas formed from remains of marine organisms
- 19. made from coal and used in steel refinery
Down
- 1. polymers that soften when heated
- 2. the main element in plastics
- 4. distillation method used to separate oil components
- 8. mixture of hydrocarbons such as kerosene and petrol
- 9. a polymer made from the monomer vinyl acetate
- 11. a soft plastic used to make cling wrap
- 13. two different monomers alternating in a chain
- 14. coal, natural gas and oil
- 16. used for packaging, containers, ballpoint pens etc
- 17. fuels made from plant and animal tissue