Memotiva AP Biology Unit 1 Topic 1.2: Elements of Life — Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur (CHNOPS)

What is the difference between a polar and nonpolar covalent bond?

AP Biology Unit 1 Topic 1.2: Elements of Life — Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur (CHNOPS)

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Nortren·April 11, 2026

What is the difference between a polar and nonpolar covalent bond?

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In a nonpolar covalent bond, electrons are shared equally between two atoms with similar electronegativity. In a polar covalent bond, one atom pulls the shared electrons more strongly, creating partial charges on both atoms. The water molecule is the classic example of polar covalent bonding.