BioKnowledgy 2.1 Molecules to metabolism from Chris Paine (at Dulwich College Shangai) – taken from his fabulous blog BioKnowledgy.
Find a video lesson on this sub-topic at Dan Rott videos, or many assessment statements are covered by Stephanie Castle.
In Crash Course Biology #1 – ‘that’s why Carbon is a Tramp’, Hank introduces us to the chemistry of life:
What’s in a molecule? – The science of macaroni salad from TED-Ed (3m 15s).