Properties of Aldehydes and KetonesThe carbonyl group present in aldehydes and ketones make them polar in nature. Both aldehydes and ketones have higher boiling points than comparable hydrocarbons. Aldehydes and ketones do not form hydrogen bonds themselves. Hence, they have lower boiling and melting points compared to alcohols with comparable molecular weights. Finally, aldehydes and ketones have higher solubility in water than hydrocarbons, but less solubility than alcohols. Even though aldehydes and ketones cannot undergo hydrogen bonding themselves, they can undergo hydrogen bonding with water molecules.