Water liquid

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  • Created by: Luxa
  • Created on: 08-01-14 14:19
Why is water the medium in which all reactions happen?
because without it substances could not move
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Water Molecules are slightly polarized this means....
That it has a slightly positive atom which is the hydrogen and slightly negative atom which is oxygen.
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Water ?
H2O
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The separation of of charge is called ________, and the tiny charges are represented as CHARGE sign negative , CHARGE sign Positive
Dipole
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The importance of the charges separation "Dipole" is that .......
that water molecules can form Hydrogen bonds
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what are hydrogen bonds?
the slightly negative oxygen atom from on water molecule will attracted the slightly positive hydrogen atom from another water molecule in a weak bond called electrostatic attraction called hydrogen bonds
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do water molecules 'stick together' more than you might expect
yes they do - because although the hydrogen bond is weak there are many of them
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Why is water an unusual and excellent solvent?
because many substances will dissolve in it .
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Water molecules are Dipole ? right ? how does that help it in being a good solvent.
the fact that water molecules are dipole means that many ionic substances like sodium chloride(salt ) , which is made of both positive and negative ions , will dissolve in it .
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how is the process of an ionic substance - dissolving in water ?
the positive and negative ions separate and become surrounded by water molecules molecules which keep them in the solution
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what are Polar substances ?
Polar substances are compounds with covalent bonds but with with small charges on different parts of the molecule
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How can water carry non polar substances ? Non -polar substances are substances that dont form ions
By forming colloids which are solute particles larger than the solvent particles
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what is the process of carrying Non-polar substances ?
the solute particles are spread through the water ( solvent ) but they are not separated out . This is because chemical reaction occur in water .
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What can the other substances that don't dissolve in water form in order to move in our body ?
emulsion and suspension
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What is Emulsion ?
tiny droplets of one liquid suspended in another.
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what is Suspension?
is a solid mixed with a liquid ( example water and sand) in which the particles will separate out if the mixture is mixed and saked if not they will separate .
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What is Blood ?
A suspension of cells and platelets in Plasma.
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How is fat transported in the body ?
Fats may be transported by emulsion
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Card 2

Front

Water Molecules are slightly polarized this means....

Back

That it has a slightly positive atom which is the hydrogen and slightly negative atom which is oxygen.

Card 3

Front

Water ?

Back

Preview of the front of card 3

Card 4

Front

The separation of of charge is called ________, and the tiny charges are represented as CHARGE sign negative , CHARGE sign Positive

Back

Preview of the front of card 4

Card 5

Front

The importance of the charges separation "Dipole" is that .......

Back

Preview of the front of card 5
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