Water and H-bonds

Properties:

• Good solvent (Anything that can form ions are attached to dipoles)
• High specific heat capacity (more bonds to break)
• Solid is less dense than the liquid (more bonds but start to repel)
• Surface tension (due to cohesion between molecules)
• Cohesion (cling through H-bonding)
• High latent heat of evaporation (e.g sweat)

H-Bonds:

• Occur in certain covalently bonded molecules (NOF)
• Shared electrons are not distributed evenly between the atoms
• E.g the oxygen atom of a water molecule has a bigger share of the electrons and is therefore slightly negative.