BioKnowledgy 2.2 Water from Chris Paine (at Dulwich College Shangai) – taken from his fabulous blog BioKnowledgy.
In Crash Course Biology #2: Water – Liquid Awesome, Hank
teaches us why water is one of the most fascinating and important substances in the universe.
IGCSE Chemistry topic 11, part 1 – Water:
A short video form The Virtual School – testing for water:
Complete Chemistry for Cambridge IGCSE, chapter 15, pp.210 – 211, 218 – 219 & p.124 (two tests for water)
Infographic from Compound Interest – just click to enlarge.