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Understanding Solutions and Solubility: A Study of Solutes and Solvents, Slides of Chemistry

An in-depth exploration of solutions, their composition, and the concept of solubility. Learn about the difference between saturated and unsaturated solutions, the role of solutes and solvents, and how to measure solubility. Also, discover how to determine the saturation point of a solute and use solubility curves to understand the relationship between temperature and solubility.

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2021/2022

Uploaded on 09/12/2022

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Science 7 Notes 13
1
Solution
Solubility
Solute
Solvent
Saturated
Unsaturated
What is a
solution?
Why isn’t water a
solution?
What are the
parts of a
solution?
Which do you
add more of..
solute or solvent?
Why is water
called the
universal
solvent?
What does it
mean for
something to
have solubility?
How can you
measure
solubility of a
substance in
water?
Solution a homogeneous mixture of very small particles
the mixture does not separate out by letting it stand or by filtering
the particles are evenly spread out
Tap water is a solution.
Pure water is not a solution…..
… Because Solutions are mixtures.
There are 2 parts to a solution:
1. Solute the part that gets dissolved
2. Solvent the part that does the dissolving. There is more of the
solvent.
Water is called the “universal solvent” because it dissolves so many things.
If you have a solution, you have a solute with some degree of solubility
1. What is solubility?
Solubility is the property that substances have of dissolving in
solvents, such as the solubility of salt in water.
What is meant by the solubility of a material in water?
How much of the material dissolves in the water.
Can you calculate the
saturation point for a solute in
solution?
pf2

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Science 7 Notes 13

Solution

Solubility

Solute

Solvent

Saturated

Unsaturated

What is a solution?

Why isn’t water a solution?

What are the parts of a solution?

Which do you add more of.. solute or solvent?

Why is water called the universal solvent?

What does it mean for something to have solubility?

How can you measure solubility of a substance in water?

Solution – a homogeneous mixture of very small particles

 the mixture does not separate out by letting it stand or by filtering

 the particles are evenly spread out

 Tap water is a solution.

 Pure water is not a solution…..

… Because Solutions are mixtures.

There are 2 parts to a solution:

1. Solute – the part that gets dissolved

2. Solvent – the part that does the dissolving. There is more of the

solvent.

Water is called the “universal solvent” because it dissolves so many things.

If you have a solution, you have a solute with some degree of solubility

1. What is solubility?

Solubility is the property that substances have of dissolving in

solvents, such as the solubility of salt in water.

What is meant by the solubility of a material in water?

How much of the material dissolves in the water.

Can you calculate the

saturation point for a solute in

solution?

Science 7 Notes 13

When is a solution saturated?

When does a solution form a precipitate?

Practice Using the Solubility Curve:

  1. With 45 grams of Substance D at 45 °C, is the solution saturated?

  2. How many grams of solute will have precipitated from the solution?

  3. How many grams of substance A are soluble in 100cm^3 of water at 30°C?

  4. How many grams of substance B are soluble in 100cm^3 of water at 30°C?

Only a certain amount of solute can be dissolved in a certain amount of

solvent at a certain temperature and pressure.

 When you can’t get any more solute to dissolve we call it a saturated

solution.

 When it could hold more solute we call it an unsaturated solution.

 When a saturated solution is cooled, some solute must come out of

solution. We call this precipitation.

Solubility Curves:

** A WAY TO FIGURE OUT HOW MUCH SUBSTANCE

YOU CAN DISSOLVE AT DIFFERENT TEMPERATURES**

Match the temperature at

the bottom with the

grams of solute on the

left side…where they

meet is the solubility for

that substance.