LESSON PLAN IN CHEMISTRY
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Transcript of LESSON PLAN IN CHEMISTRY
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LESSON PLAN IN CHEMISTRY
Prepared By:MARIVIC BULDA FRANCISCO
ERNESTO RONDON HIGH SCHOOLQuezon CityPHILIPPINES
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TARGETS: At the end of lesson , the students are expected to;
18 K Gold ring
1. Define concentration of solutions.
3. Express concentration of solutions in molarity.
4. Evaluate common solutions in terms of their concentration.
2. Differentiate between dilute and concentrated solutions.
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Dilute and concentrated solutions
Expressing concentration of solutions in molarity.
Evaluating concentrations of common solutions
TOPIC: Concentration of Solutions
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brass steel
muriatic acid
rubbing alcohol
Acetic acid
Juices
dextrose
vinegar
These are some common solutions ……
Do you use these at home?
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Identify three examples of solutions that you commonly use
Let us recall the difference between solute and solvent in a solution.
Solutions Solute Solvent1. 18 Karat Gold Copper (6 parts) Gold (18 parts)2. 3.4.
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What is a Solution? A solution is a homogeneous mixture of two or more substances.
What is a Solute? Solute is the substance dissolved. It is present
in a lower concentration.
Solvent is the dissolving medium. It is present in a greater concentration.
What is a Solvent?
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Welcome to SOLUTIONS AT WORK!
We will explore the following;1.Dilute and concentrated solutions.2. Concentration of solutions3. Molarity4. Evaluating some common solutions
INTRODUCTION
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Which of them is the most concentrated?
Click on the glass number, to find if you are correct.
Sweet, sweeter, sweetestThe glasses below contain apple juice.....
1 2 3 4 5
http://en.wikipedia.org/wiki/Concentration
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I’m Sorry
INCORRECT
Try Again…
BACK NEXTHOME
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Did you taste it?
FANTASTIC!GREAT
JOB
BACK NEXTHOME
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Which of them is the most concentrated? How will you know the sweetest?
Sweet, sweeter, sweetestThe beakers below contain sugar
solutions.....
1 2 3http://www.ask.com/pictures?l=dis&o=15561&q=beaker%20of%20water&qsrc=168
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YES…We have to know the amountof sugar dissolved in water to form
the solution.This is what we call
INTRODUCTION
CONCENTRATION of SOLUTIONS(the relative amount of solute dissolved in a given solvent)
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Concentration of Solutions
Solutions
SolventSolute in relative proportions
called
contain
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DID YOU GET IT?
Let’s Move on…We will now go to another
level.
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A. Particles of dilute CuSO4 solution
CuSO4 -Solute
H2O-SolventSolution
How many layers of
the solute (CuSO4)
particles are there?
3 layers
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How many layers of the
solute (CuSO4) particles are
there?
B. Particles of concentrated CuSO4 (copper sulfate) solution
CuSO4 -Solute
H2O-SolventSolution
5 layers
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A B
The following pictures show particles in a mixtureof water(red & white) and bromine (yellow) .
Which one is more concentrated? Why?
BACK NEXTHOME
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There are more yellow particles (4 pieces) seen….
Very Good! BA
More solute particles, more concentrated
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What is the difference between dilute and concentrated solutions?
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Dilute CuSO 4
solution
Concentrated CuSO
4 solution
Contains more solvent,
the solute becomes
more dilute (more spaces between the
solute molecules
Contains less solvent, less spaces
between the solute
molecules
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Any questions?
A solution is dilute if more solvent particles are present with same amount of solute.
Write your name below the statement if you agree with it.
NAMES HERENAMES HERE
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More questions?
A solution is concentrated if
more solute particles is
present with same amount
of solvent.
Write your name beside the statement if you agree with it.
NAMES HERE
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Concentration of Solutionscan be expressed
Solutions
SolventSolute in relative proportionscalled
asMolarity
%By Mass% By Volume
NormalityMole Fraction
contain
ConcentratedDilute
Low High
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This is another example of dilute and concentrated solutions.
Which is dilute? Which is concentrated?
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Dilute
Concentrated
The concentration here is viewed in terms of M (Molarity)
Less Volume of Solution Greater Volume of Solution
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To understand about MOLARITY, and more about solutions,
Click Below
BACK HOME
Welcome to the World of MOLARITY
We may now explore the different sample problems given.
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