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Mistake Master · AP Biology · Unit 1 · Step-Through Animation

One Bend, Six Consequences

You'll learnwhy water's bent shape makes it polar, and how that drives hydrogen bonding between molecules.

Water is two hydrogens and an oxygen, bent at 104.5° — and because oxygen pulls the shared electrons harder, one end goes slightly negative and the other slightly positive. That single structural fact is why water climbs trees, holds up a strider, resists the stove, and freezes into something that floats. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · BENT 104.5° · δ− ON O, δ+ ON H · HYDROGEN BOND = BETWEEN MOLECULES · v6

one bent molecule · the dashed bond between molecules · six payoffs
Before you start
What you're looking at
One stationary water molecule: one oxygen, two hydrogens, joined by covalent bonds drawn as solid grey sticks, bent at 104.5°.
The question
How does the bend turn a neutral molecule into a polar one that bonds to its neighbours?
Step 1 / 12