Science Bank (Reactions & Energy Changes): part 2 Reaction Rates (from 4m 40s) & part 3 Catalysts (from 9m 20s):
Five minutes on how to speed up chemical reactions (and get a date) from TED-Ed.
GCSE Bitesize – two videos – Rates of Reaction (3m 18s) or Rates of Reactions (4m 40s) & Bitesize Top 20 Science Demos – Rates of Reaction (5m 51s).
Complete Chemistry for Cambridge IGCSE, chapter 10, pp.130 – 140
Infographic courtesy of the fabulous Compound Interest blog – just click on it to enlarge.