A mixture is composed of two or more substances that are not chemically combined. There are two types of mixtures - heterogeneous mixtures where the phases can be seen, and homogeneous mixtures where the phases cannot be seen. A solution is a special type of homogeneous mixture containing a solute dissolved in a solvent. The solute is the part that dissolves, like salt or sugar, while the solvent does the dissolving and is usually a liquid like water. The concentration of a solution depends on how much solute is added, with dilute solutions having little solute and concentrated solutions having a large amount. A saturated solution contains as much solute as it can dissolve under given conditions, while a supersaturated solution contains more solute than

1. Mixtures and Solutions
Can You See The Phases?

2. What Is A Mixture?
A mixture is made of 2 or more types of atoms
that are NOT chemically combined together.
Mixtures can take many forms:
2+ Solids 2+ Liquids 2+ Gases
ANY combination of solids, liquids & gases

3. Mixtures of Solids

4. Mixtures of Liquids

5. Mixtures of Gases

6. Types Of Mixtures
There are 2 major types of mixtures:
Heterogeneous Homogeneous
Means “different” Means “the same”
You can see the You cannot see
different parts the different parts
(phases) of the (phases) of the
mixture easily mixture

7. Heterogeneous Mixtures

8. Homogeneous Mixtures

9. Which Kind of Mixture?
Classify each type of mixture as:
Heterogeneous Homogeneous
Heterogeneous Homogeneous Heterogeneous

10. Solutions
A solution is a special type of mixture.
A solution is a homogeneous mixture
that combines a solute and a solvent.
A solution involves one
substance dissolving in
another substance, which
is usually a liquid.

11. Solutions
A solution is a special type of mixture.
A solution is a homogeneous mixture
that combines a solute and a solvent.
Solute Solvent
The solid part that The liquid part that
gets dissolved. does the dissolving.
e.g. salt, sugar e.g. water

12. Solutions
A solution is a special type of mixture.
A solution is a homogeneous mixture
that combines a solute and a solvent.
Solute Solvent
The solid part that The liquid part that
gets dissolved. does the dissolving.
e.g. salt, sugar e.g. water

13. How To Make A Solution
Solute + Solvent = Solution
Salt Water Salt Solution

14. Solubility
We can measure how easily a solute
will dissolve in a certain solvent.
This measurement is called solubility.
HIGH Solubility LOW Solubility
The solute dissolves The solute does not
quickly & easily dissolve easily
e.g. salt in water e.g. sand in water

15. Dilute vs. Concentrated
We can add a LITTLE or a LOT of solute!
For example, putting spoonfuls
of sugar into a cup of tea…
A solution with only
a small amount
of solute is called
a dilute solution.

16. Dilute vs. Concentrated
We can add a LITTLE or a LOT of solute!
For example, putting spoonfuls
of sugar into a cup of tea…
A solution with a
large amount of
solute is called
concentrated.

17. Saturated Solutions
Eventually, a solvent can’t hold anymore!
A saturated solution CANNOT hold any
more solute at a certain temperature.

18. Keep Going!
But, by heating a solvent up, we can make
it hold even more solute than normal.
A super-saturated solution contains more
solute than it can normally dissolve.
Heat It!

19. Any Questions?