Instructional Video10:03
SciShow

Here's What DNA Really Looks Like

12th - Higher Ed
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.
Instructional Video11:02
Khan Academy

Chiral Examples 1, Stereochemistry, Organic Chemistry

10th - Higher Ed
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.
Instructional Video
Khan Academy

Khan Academy: Conformations: Newman Projections 2

9th - 10th
Newman Projections 2: Visualized carbon-carbon chemical bonds explained by Khan Academy. [11:12]