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CAIE A-Level Biology 2.4.1 Hydrogen Bonding Between Water Molecules

Practise assigning partial charges in water and drawing intermolecular hydrogen bonds between δ+ hydrogen and δ− oxygen without confusing them with covalent O–H bonds.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • assign partial negative charge to oxygen and partial positive charge to each hydrogen
  • draw the hydrogen bond between oxygen of one molecule and hydrogen of another
  • distinguish weak intermolecular hydrogen bonds from the covalent O–H bonds within water

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