Across
- 5. The term for when polymer chains have no side branches and line up closely in rows. (11)
- 8. A use for one of the fractions of crude oil. (9)
- 9. A pollutant produced from burning coal. Produces acid rain. (6,7)
- 10. The reason why tectonic plates move. (10,8)
- 12. The acidic gas produced by the LeBlanc process. (8,7)
- 17. A solution of salt and water. (5)
- 18. A molecule that softens a polymer and makes it more flexible. (11)
- 19. A molecule consisting of hydrogen and carbon atoms only. (11)
- 20. How close a measurement is to the true value. (8)
Down
- 1. A synthetic polymer (PTFE) that allows water vapour through but not water droplets (4,3)
- 2. The process by which hydrogen chloride is turned to chlorine. (9)
- 3. When another scientist completes an experiment and gets a similar pattern/ result to an original scientist. (12)
- 4. The process of separating compounds in crude oil based on their boiling points. (10,12)
- 6. A traditional source of alkali. (5,5)
- 7. What sulfur dioxide reacts with in the process of wet scrubbing. (6)
- 11. The units that make up polymers. (7)
- 13. The product of wet scrubbing when the flue gases are prayed with calcium oxide and water. (7,7)
- 14. A synthetic polymer five times stronger than steel. (6)
- 15. A use of sodium hydroxide produced by the electrolysis of brine. (6)
- 16. The name of the process that happens in a catalytic converter to change nitrogen monoxide to nitrogen. (9)