Chemistry / Chem 1393 · Atom · ~20 seconds
Cohesive vs. Adhesive Forces
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State
Cohesive forces are attractions between like molecules of one liquid; adhesive forces are attractions between a liquid and a different surface.
Show
Water beads on a waxed car hood because its cohesive forces exceed its adhesive forces toward the wax.
Watch for
Whether a liquid spreads or beads depends on which force wins, not on the liquid's identity alone.