1. Welcome!
Please have a seat quietly. After the bell, we will watch a quick video about lesson 3. You may take notes if you wish; they may help with your storyboard
Take out your Water Cycle Story Board from the tray and begin working on it
You will have 15 minutes to finish

2. Notes Take out your notebook Grab your Clicker
Get ready to take some notes!

4. Solution
a mixture of two or more substances that is identical throughout
can be physically separated
composed of solutes and solvents
Salt water is considered a solution. How
can it be
physically separated?
the substance in the smallest
amount and the one that dissolves in the solvent
the substance in the larger
amount that dissolves the solute
Iced Tea Mix
(solute)
Water
(solvent)
Iced Tea
(solution)

5. What is a solution? Solute/solvent Dissolved Dissolving
The solute is the substance that gets
The solvent does the ________.
Dissolving

6. How can you remember? Think, Pair, Share
Think for 1 minute about how you could remember the difference between solute and solvent.
Pair up with your shoulder partner, 15 seconds each, share your strategy for memorization

7. This is the substance with the smaller amount?
Solution
Solute
Solvent

8. Which of these best represents a solution?
A solution is a type of homogeneous mixture where the parts can be physically separated, and the parts are equally spread apart throughout the sample.

9. Solutions
Solutions are homogeneous mixtures of two or more pure substances.
In a solution, the solute is dispersed uniformly throughout the solvent.

10. What is a solution? Soluble/insoluble
A substance that is can be dissolved.
Soluble

11. Solutes Change Solvents
The amount of solute in a solution determines how much the physical properties of the solvent are changed
Examples:
Lowering the Freezing Point
Raising the Boiling Point
The freezing point of a liquid solvent
decreases when a solute is dissolved in it.
Ex. Pure water freezes at 320F (00C), but when salt is
dissolved in it, the freezing point is lowered.
This is why people use salt to melt ice.
The boiling point of a solution is higher
than the boiling point of the solvent.
Therefore, a solution can remain a liquid at
a higher temperature than its pure solvent.
Ex. The boiling point of pure water is 2120F (1000C),
but when salt is dissolved in it, the boiling
point is higher. This is why it takes salt water
longer to boil than fresh water.

12. Solubility
the amount of solute that dissolves in a certain amount of a solvent at a given temperature and pressure to produce a saturated solution
influenced by:
What do we call things that are not soluble?
Temperature
Pressure
Solids increased temperature causes
them to be more soluble and vice versa
Gases increased temperature causes
them to be less soluble and vice versa
Ex. Iced Coffee
Solids increased pressure has no
effect on solubility
Gases increased pressure causes them
to be more soluble and vice versa
Ex. Soda, “The Bends”

13. Concentration
the amount of solute dissolved in a solvent at a given temperature
described as dilute if it has
a low concentration of
solute
described as saturated if it
has a high concentration of
described as supersaturated if it contains more dissolved solute
than normally possible

14. Types of Solutions Saturated
Solvent holds as much solute as is possible at that temperature.
Dissolved solute is in dynamic equilibrium with solid solute particles.

15. Types of Solutions Unsaturated
Less than the maximum amount of solute for that temperature is dissolved in the solvent.

16. Types of Solutions Supersaturated
Solvent holds more solute than is normally possible at that temperature.
These solutions are unstable; crystallization can usually be stimulated by adding a “seed crystal” or scratching the side of the flask.

17. Separating Mixtures DECANTING GOLD DISTILLATION FILTRATION
Because they are formed physically, they can be separated in various ways:
DECANTING GOLD
DISTILLATION
FILTRATION
CHROMATOGRAPHY

18. Gestures/Pictionary You and your partner are a pair.
You will take a card from the deck and act out/draw the word for the other group.
Each group will have 30 seconds to try to guess the correct term.