2.2 Water


 
Polarity of water
Water is a polar molecule. This means that it carries a charge. The charge difference is due to the higher electronegativity of the oxygen atom commpared to the hydrogens in the molecule.


 
Solubility
Water is a good solvent especially for polar molecules. Here we look at how salt (NaCl) is dissolved by water. The individual water molecules arrange themselves around the Sodium (Na) and Chroline (Cl) atoms.


 
Comparing methane and water
Water is able to form hydrogen bonds. For this reason, boling temperature, specific heat capacity, latent heat are higher than for methane.


 
Properties of water
Water is able to form hydrogen bonds, which gives it its specific properties. Water has solvent, adhesive and thermal properties.


 
Transport of substances by water
Being polar, water is a good solvent for other polar substances. Non-polar substances can not be easily transported by water directly.