A-Level CAIE Chemistry AS 3.6.1—Hydrogen bonding Question Bank

• Ammonia and water as simple examples

- (a) describe hydrogen bonding, limited to molecules containing N–H and O–H groups, including

- (b) use the concept of hydrogen bonding to explain the anomalous properties of H₂O (ice and water):

- its relatively high melting and boiling points

- its relatively high surface tension

- the density of solid ice compared with liquid water