IGCSE Chemistry topic 11, part 2 – Air:

http://www.youtube.com/watch?v=zK65qHtULRE&feature=share&list=PLthIRQZYW9MLUwo1I3RGFCnzOy3CypB3c

Traffic Pollution is a 3m 14s vid from BBC iScience. Science Bank 1 (Raw Materials): nitrogen & the distillation of liquid air can be found from 8m 31s to 10m 40s and BBC Short Circuit Changes in Atmosphere is a 19m video covering global warming.

TEXTBOOK REVISION

Complete Chemistry for Cambridge IGCSE, chapter 15, pp.212 – 215 & chapter 16, pp.234 – 235 & 238 – 239