Water Water has 5 main properties
that you need to relate to its
: It is polar
structure and function:
- has slight negative charges on its (1) Water is a metabolite in many
oxygen atom - slight positive charge on metabolic reactions
its hydrogen atoms : A metabolite is just a substance that is
a reactant or product of a metabolic
reaction
: Slight-positive and slight-negative are
represented as delta+ and delta- : You don’t need to link this to its
structure, because this isn’t really a
- this is due to the difference in property it’s an observation
electronegativity between the hydrogen
and oxygen atoms
- these dipoles cause hydrogen bonds (2) Water is a solvent in which
to form between the delta+ hydrogen metabolic reactions occur
and the delta- oxygen atoms : Water is a good solvent, it readily
allows substances to dissolve in it
- because water is dipolar so the slight
positive charge on hydrogen atoms will
attract negative ions in solutes
- the slight negative charge on oxygen
atoms will attract positive ions in
solutes
- allowing the substance to split up and
dissolve within it
: Once the polarity of water splits up the
ions, water molecules then surround it
- allows it to dissolve
: These polar molecules are hydrophilic
– non-polar
- hydrophobic molecules cannot
dissolve in water because they cannot
ionise to be attracted to the dipoles of
water
: This property of it being a solvent
allows substances to be transported
easily around animals and plants – e.g.,
blood or xylem
that you need to relate to its
: It is polar
structure and function:
- has slight negative charges on its (1) Water is a metabolite in many
oxygen atom - slight positive charge on metabolic reactions
its hydrogen atoms : A metabolite is just a substance that is
a reactant or product of a metabolic
reaction
: Slight-positive and slight-negative are
represented as delta+ and delta- : You don’t need to link this to its
structure, because this isn’t really a
- this is due to the difference in property it’s an observation
electronegativity between the hydrogen
and oxygen atoms
- these dipoles cause hydrogen bonds (2) Water is a solvent in which
to form between the delta+ hydrogen metabolic reactions occur
and the delta- oxygen atoms : Water is a good solvent, it readily
allows substances to dissolve in it
- because water is dipolar so the slight
positive charge on hydrogen atoms will
attract negative ions in solutes
- the slight negative charge on oxygen
atoms will attract positive ions in
solutes
- allowing the substance to split up and
dissolve within it
: Once the polarity of water splits up the
ions, water molecules then surround it
- allows it to dissolve
: These polar molecules are hydrophilic
– non-polar
- hydrophobic molecules cannot
dissolve in water because they cannot
ionise to be attracted to the dipoles of
water
: This property of it being a solvent
allows substances to be transported
easily around animals and plants – e.g.,
blood or xylem
