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SciShow
Here's What DNA Really Looks Like
There’s more to DNA than just the double helix we know and love: under some conditions this familiar molecule can take on unfamiliar forms, each of which can have a different impact on our health.
Khan Academy
Chiral Examples 1, Stereochemistry, Organic Chemistry
Sal's video is a selection of structure diagramming examples. Sal draws each out and demonstrates whether each is chiral or not. The video also presents a large number of relevant terms and reviews the nomenclature of conformations.
Khan Academy
Khan Academy: Conformations: Newman Projections 2
Newman Projections 2: Visualized carbon-carbon chemical bonds explained by Khan Academy. [11:12]