a) Describe how hydrogen bonding occurs between H20 molecules and relate this ot their other properties and roles of water to living organisms.
- The atoms are covalent bonded
- Oxygen is more electronegative than Hydrogen so Oxygen is slightly negative and Hydrogen is slightly possitive.
- Other water molecules are attracted to each other by hydrogen bonding. Oxygen is slightly negative so experiences an attraction to the slightly possitive Hydrogen.
High specific heat capacity: energy needed to break hydrogen bonds between water molecules so less heat energy is available to raise the tempreature of the individual molecule. This is useful because
- it maintains the tempreatur of an organism
- acts as a medium for chemical reaction.
High latent heat of vaporisation: This means that water needs a lof of heat energy to change water molecules to water vapour. This occurs in transpiration in plants and sweating in mammals.This…