1. Solutions
To play the movies and simulations included, view the presentation in Slide Show Mode.

2. Some Definitions
A solution is a HOMOGENEOUS mixture of 2 or more substances in a single phase.
One part is usually regarded as the SOLVENT and the others as SOLUTES.

3. Parts of a Solution
SOLUTE – the part of a solution that is being dissolved (usually the lesser amount)
SOLVENT – the part of a solution that dissolves the solute (usually the greater amount)
Solute + Solvent = Solution
Solute
Solvent
Example
solid
liquid
gas

4. Definitions Solutions can be classified as saturated or unsaturated.
A saturated solution contains the maximum quantity of solute that dissolves at that temperature.
An unsaturated solution contains less than the maximum amount of solute that can dissolve at a particular temperature

5. Definitions
SUPERSATURATED SOLUTIONS contain more solute than is possible to be dissolved.
SUPERSATURATED SOLUTIONS are unstable.
SUPERSATURATED SOLUTIONS are only temporary, and usually accomplished in one of two ways:

6. More Definitions
SUSPENSIONS – The particles are so large that they settle out unless the mixture is constantly stirred.
COLLOID – Contains particles that are intermediate in size between those of a solution and a suspension
Flour suspended in water

7. Italian Salad Dressing Orange Juice with pulp
Examples of suspensions include:
Italian Salad Dressing
Orange Juice with pulp

8. Soluble=describes a substance that CAN be dissolved in a given solvent
Insoluble=describes a substance that CAN NOT be dissolved in a given solvent

9. Factors Affecting Dissolving Rate
Increasing the surface area –
Making the solute into smaller pieces gives more contact between the solute and the solvent.

10. Factors Affecting Dissolving Rate
Agitating the solution –
Stirring or shaking
increases contact
between solute
and solvent

11. Factors Affecting Dissolving Rate
Heating the solution –
Increasing the temperature
increases the KE making
the particles of the
solute move faster and
increases the collisions
between the solute and
the solvent.

12. Solubility is:
The maximum amount of solute (solid) that can be dissolved in a solvent (the liquid) at a given temperature.

13. Concentration of Solute
Can be expressed as a percentage, for example: 100% juice, 10% NaCl, 3% H2O2 (Hydrogen peroxide)

14. If the temperature is increased, the solubility of MOST solids increases
If the temperature is increased, the solubility of ALL gasses decreases.

15. Solubility chart: Chart listing the solubility of items in water.
It’s used to show lists of things that will or will NOT dissolve in water
You will need to practice using one…

16. THE END