Water
Condensation: occurs when two molecules join together with the removal of water
Hydrolysis: splitting a molecule apart with the addition of water
Polar molecule: a molecule that has an uneven charge distribution, it has partial positive and negative charges which do not cancel out
Due to hydrogen bonds:
Properties Explanation It can…
Liquid at Hydrogen bonds between water molecules make - provide a habitat (lakes, rivers)
room temp it difficult for them to escape to become a gas - major component of tissues
- reactions medium for chemical reactions
- effective transport medium (eg blood)
Density Provides an ideal habitat for living organisms - ponds insulated against extreme temperature by layer of ice which
Water becomes less dense as it gets colder and decrease heat loss, so aquatic organisms have stable environment
ice floats - change in density of water with temperature creates current -> allow
Hydrogen bonds hold water molecules apart in an circulation of nutrients
open lattice structure
Solvent for Water molecules cluster around charge parts of - molecules can move around in solution and react together
polar solute molecules and keep them apart - molecules/ ions can be transported when dissolved
molecules - removal of waste (eg urea in urine)
Non polar Non polar molecules tend to be pushed together - allows tertiary structure of proteins to form
molecules and allow hydrophobic interactions to occur - allows phospholipid bilayer to form
Cohesion and Cohesion- water molecules are attracted together - columns of water are pulled up xylem
surface as a result of hydrogen bonds - insects such as pond skaters can walk on water
tension Surface tension- water molecules are all hydrogen
bonded to the water molecules beneath and this
gives the surface of water an ability to resist force
applied to it
High specific Hydrogen bonds restrict the movement of water - water does not warm up or cool down easily
heat capacity molecules and therefore a relatively large amount - water keeps a stable temperature giving aquatic organisms a stable
of energy is needed to raise the temp of water environment in which to live
Condensation: occurs when two molecules join together with the removal of water
Hydrolysis: splitting a molecule apart with the addition of water
Polar molecule: a molecule that has an uneven charge distribution, it has partial positive and negative charges which do not cancel out
Due to hydrogen bonds:
Properties Explanation It can…
Liquid at Hydrogen bonds between water molecules make - provide a habitat (lakes, rivers)
room temp it difficult for them to escape to become a gas - major component of tissues
- reactions medium for chemical reactions
- effective transport medium (eg blood)
Density Provides an ideal habitat for living organisms - ponds insulated against extreme temperature by layer of ice which
Water becomes less dense as it gets colder and decrease heat loss, so aquatic organisms have stable environment
ice floats - change in density of water with temperature creates current -> allow
Hydrogen bonds hold water molecules apart in an circulation of nutrients
open lattice structure
Solvent for Water molecules cluster around charge parts of - molecules can move around in solution and react together
polar solute molecules and keep them apart - molecules/ ions can be transported when dissolved
molecules - removal of waste (eg urea in urine)
Non polar Non polar molecules tend to be pushed together - allows tertiary structure of proteins to form
molecules and allow hydrophobic interactions to occur - allows phospholipid bilayer to form
Cohesion and Cohesion- water molecules are attracted together - columns of water are pulled up xylem
surface as a result of hydrogen bonds - insects such as pond skaters can walk on water
tension Surface tension- water molecules are all hydrogen
bonded to the water molecules beneath and this
gives the surface of water an ability to resist force
applied to it
High specific Hydrogen bonds restrict the movement of water - water does not warm up or cool down easily
heat capacity molecules and therefore a relatively large amount - water keeps a stable temperature giving aquatic organisms a stable
of energy is needed to raise the temp of water environment in which to live
