3.1.7 Water Flashcards
Properties of water
- metabolite in metabolic reactions
- good solvent
- relatively high heat capacity
- relatively large latent heat of vaporisation
- strong cohesion between water molecules
- water is less dense as a solid
- transparent to light
Properties of water
metabolite in metabolic reactions
e.g. hydrolysis, condensation
Properties of water
good solvent
- can dissolve polar substances
e. g. O2, CO2, ATP, amino acids (hydrophilic)
Properties of water
relatively high heat capacity
-water absorbs/loses a lot of heat before its temperature changes
└lot of energy to break H bonds
-can buffer temp changes ion habitats
Properties of water
relatively large latent heat of vaporisation
-water absorbs a large around of energy before turning into water vapour
=cooling effect with little loss of water through evaporation
Properties of water
strong cohesion between water molecules
attraction between particles of the same substance
- allows unbroken columns of water to rise up the xylem as a result of transpiration
- produces surface tension where water meets air
Water bonding
Hydrogen bonding
-slightly positive hydrogen attracted to slightly negative oxygen