Understanding Liquid Mixtures in Nursing Chemistry

 
LIQUID MIXTURES
 
CLS 101: Chemistry for Nursing
Iman AlAjeyan
 
Mixtures
 
 
A mixture is a material system made up by two or
more different substances which are mixed together
but are not combined chemically.
 
The air is a mixture of gases, largely nitrogen,
oxygen, and carbon dioxide, along with smaller
percentages of other substances.
 
Liquid Mixture
 
There are 4 types:
 
Solutions
Suspensions
Colloids
Emulsions
 
A homogeneous is a substance
that is uniform in composition
 
A heterogeneous mixture of
large solid substance in
another substance made by
mechanical agitation
 
A homogeneous & A heterogeneous mixture
 
A solution is a homogeneous (A substance that is
uniform in composition) mixture of one or more
substances called solutes dissolved in another
substance called the solvent.
 
The 
solute
 can be 
solid, liquid
, or 
gas
 but the
solvent
 is always a 
liquid
. E.g. salt solution,
sugar solution,...
 
Solutions
 
Solution
 
When the 2 substances totally mix it is called a solution
 
E
.
g
.
 
S
o
l
u
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+
 
S
o
l
v
e
n
t
 
=
 
S
o
l
u
t
i
o
n
 )       
sugar) + (water) =
Solution
 
We then say sugar is 
soluble 
in water, it has dissolved
An aqueous solution is one in which water is the solvent.
 
Properties of a Solution
 
1.
Consists of a solute and a solvent.
2.
Have variable composition.
3.
Clear.
4.
Homogenous.
5.
Do not settle.
6.
Can be separated by physical properties.
7.
Can pass through filter paper.
 
A suspension is a heterogeneous mixture of large
solid substance in another substance made by
mechanical agitation.
 
The substances distributed in the background
material is not dissolved and will settle out unless
the mixture is constantly shaken.
 
 
Suspensions
 
The size of the particles is great enough so they are
visible to the naked eye.
 
 
The 
solute
 is always a 
solid
 substance but the
solvent 
can be 
solid, liquid, or gas
. E.g. mud in
water, flour in water, some medicines, dust or water
in air,...
 
Properties of a Suspension
 
 
1.
Consists of a solid in a solvent.
2.
Heterogeneous.
3.
Not clear.
4.
Settle.
5.
Do not pass through filter paper or
membranes.
 
E
x
a
m
p
l
e
s
 
o
f
 
S
u
s
p
e
n
s
i
o
n
s
 
 
 Is a homogeneous solution with intermediate particle
size between a solution and a suspension.
 
The 
solute
 can be 
solid, liquid, or gas 
substance
AND the 
solvent
 can also be 
solid, liquid, or gas
.
E.g. Foam (Whipped cream), Gel (jelly), smoke,
blood,...
 
E
x
a
m
p
l
e
s
 
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C
o
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l
o
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d
s
 
E
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a
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C
o
l
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s
 
Properties of a Colloid
 
1.
Can be homogenous.
 
2.
Do not settle.
 
3.
Pass through filter paper but NOT
membranes.
 
Emulsions
 
Emulsion  is a mixture consists of two or more
liquids that do not mix.
 
There are two kinds of emulsions. An emulsion that
settles is called 
temporary emulsion
. An emulsion
that doesn’t is called 
permanent emulsion.
 
E.g. oil and vinegar.
 
E
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Any Question?
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Explore the world of liquid mixtures in nursing chemistry with a detailed look at solutions, suspensions, colloids, and emulsions. Learn about the properties of solutions and suspensions, the distinction between homogeneous and heterogeneous mixtures, and the various types of liquid mixtures encountered in healthcare settings. Gain insights into the composition, behavior, and applications of different liquid mixtures essential for nursing practice.


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  1. LIQUID MIXTURES CLS 101: Chemistry for Nursing Iman AlAjeyan

  2. Mixtures A mixture is a material system made up by two or more different substances which are mixed together but are not combined chemically. The air is a mixture of gases, largely nitrogen, oxygen, and carbon dioxide, along with smaller percentages of other substances.

  3. Liquid Mixture There are 4 types: Solutions Suspensions Colloids Emulsions

  4. A homogeneous & A heterogeneous mixture http://t3.gstatic.com/images?q=tbn:ANd9GcTNk-4vyioIbnwEgZyLxyLWNztctkK1IpGt0_1kvn9YSnS6ktd2hFqiM8c A homogeneous is a substance that is uniform in composition A heterogeneous mixture of large solid substance in another substance made by mechanical agitation

  5. Solutions A solution is a homogeneous (A substance that is uniform in composition) mixture of one or more substances called solutes dissolved in another substance called the solvent. The solute can be solid, liquid, or gas but the solvent is always a liquid. E.g. salt solution, sugar solution,...

  6. Solution When the 2 substances totally mix it is called a solution E.g. Solute + Solvent = Solution ) sugar) + (water) = Solution File:SaltInWaterSolutionLiquid.jpg We then say sugar is soluble in water, it has dissolved An aqueous solution is one in which water is the solvent.

  7. Properties of a Solution 1. Consists of a solute and a solvent. 2. Have variable composition. 3. Clear. 4. Homogenous. 5. Do not settle. 6. Can be separated by physical properties. 7. Can pass through filter paper.

  8. Suspensions A suspension is a heterogeneous mixture of large solid substance in another substance made by mechanical agitation. The substances distributed in the background material is not dissolved and will settle out unless the mixture is constantly shaken.

  9. The size of the particles is great enough so they are visible to the naked eye. The solute is always a solid substance but the solvent can be solid, liquid, or gas. E.g. mud in water, flour in water, some medicines, dust or water in air,...

  10. Properties of a Suspension 1. Consists of a solid in a solvent. 2. Heterogeneous. 3. Not clear. 4. Settle. 5. Do not pass through filter paper or membranes.

  11. Examples of Suspensions

  12. Colloids Is a homogeneous solution with intermediate particle size between a solution and a suspension. The solute can be solid, liquid, or gas substance AND the solvent can also be solid, liquid, or gas. E.g. Foam (Whipped cream), Gel (jelly), smoke, blood,...

  13. Examples of Colloids

  14. Examples of Colloids GAS LIQUID SOLID GAS NON Liquid Aerosol E.g.: fog, mist, hair sprays Solid Aerosol E.g.: smoke, cloud, air particulates. LIQUID Foam Emulsion Sol E.g.: whipped cream, shaving cream. E.g.: milk, mayonnaise, hand cream E.g.: pigmented ink, Blood SOLID Solid Foam E.g.: Marshmallow, pumice Gel Solid sol Example: Certain alloys E.g.: agar, gelatin, jelly.

  15. Properties of a Colloid 1. Can be homogenous. 2. Do not settle. 3. Pass through filter paper but NOT membranes.

  16. Emulsions Emulsion is a mixture consists of two or more liquids that do not mix. There are two kinds of emulsions. An emulsion that settles is called temporary emulsion. An emulsion that doesn t is called permanent emulsion. E.g. oil and vinegar.

  17. Examples of Emulsions

  18. Any Question?

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