1. Aim:
What is a solution?

2. Describe the characteristics and the parts of a solution
Objectives
Describe the characteristics and the parts of a solution

3. Dissolve … Solution …Soluble Insoluble …Solute…Solvent Acid Rain
Vocabulary
Dissolve … Solution …Soluble
Insoluble …Solute…Solvent
Acid Rain

4. What Happens
… when you add sand to water
Can you still detect the sand particles
Is it easy to separate the sand from the water
How would you do that

5. What Happens
… when you add salt to water
Can you still detect the salt particles
Is it easy to separate the sand from the water
How would you do that

6. What's The Difference
… when you add salt to water
The Salt dissolves in the water.
Mixing Salt and Water is called a solution.

7. Types of Solutions
… Most Common Types
Solid into Water … Salt or Sugar
Gas into Water … Club Soda
Liquid into Liquid …80% alcohol

8. Definitions
A pure mixture contains two or more substances that have been mixed together but not chemically combined
A solution is mixture where one substance is evenly mixed into another substance

9. The solvent does the dissolving (water)
Solutions Have Parts
The solute is the substance that is dissolved into the other substance (salt)
The solvent does the dissolving (water)
Something which easily dissolves is called ?
What do you call something that does not easily dissolve?

10. Not all solutes are soluble in all solvents!
Examples
Salt is very soluble
Sand is not
Sugar is very soluble
Copper is not
Not all solutes are soluble in all solvents!

11. Water is the Universal Solvent
Remember that phrase
Water will dissolve almost anything
Even Rock ! Over millions of years !
Water dissolve pollutants in the air to form acids which cause Acid Rain.
Acid Rain destroys forest, lakes, statues

14. Its summertime: What is wrong

15. The statue has been corroded by acid rain
Statue over castle in Germany, photographed in 1908 (left) and again in 1968 (right).
The statue has been corroded by acid rain