Water - Biochemistry
- Created by: HeHeHe24
- Created on: 06-12-19 09:56
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- Water
- Hydrogen bonding
- large difference in electronegativity
- delta negative on oxygen
- delta positive on hydrogen
- leads to the formation of a permanent dipole
- leads to a polar bond formation
- uneven distribution of charge
- Properties
- density
- solid is less dense than liquid (ice)
- due to hydrogen bonds
- align in an open tetrahedral lattice
- provides thermal insulation
- stable environment for aquatic organisms
- good solvent
- polar
- attracts negative and positive charges
- dissolve substances
- good for transport
- used as a reactant
- hydrolysis/ photosynthesis
- high specific heat capacity
- provides thermal stability
- a lot of energy is needed to raise temperature
- maintains a fairly constant temperature
- specific latent heat of vaporisation
- cooling mechanism - sweat
- lot of energy is needed for evapouration
- evaporation removes a lot of energy
- incompresaible
- pressurised
- pumped in for transport systems
- support hydrostatic skeletons
- cohestion
- attraction of water molecules - surface tension
- creates a habitat on the surface
- water movement in xylem
- attraction of water molecules - surface tension
- density
- Hydrogen bonding
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