1. Solutions

2. What is a solution?
Usually a Homogeneous Mixture of two or more substances in a physical state
Made of two parts
Solute: part being dissolved
Solvent: part that does the dissolving

3. Example of a solution Salt + water → saltwater Which is the solute?
Which is the solvent?
water

4. The solid that forms from a solution.
What is a precipitate?
The solid that forms from a solution.

5. What is an aqueous solution?
A solution where the solvent is water

6. Can a Heterozygous Mixture form a solution?
Yes, but it is usually considered a temporary solution
Suspension: has different parts that settle to the bottom (Example dirt and water mixed)

7. What is a Colloid? A stable Heterozygous Mixture that forms a solution
The particles don’t settle out
Why? The particles are electrically charged and repel each other to form bigger particles
Example: Milk

8. What is Solubility? The quantity of a solute that will dissolve in a specified amount of solvent at a specific temperature.

9. The ratio of a solute to solvent Example: 95% water to 5% salt
What is Concentration?
The ratio of a solute to solvent Example: 95% water to 5% salt

10. Concentration formulas
M (Molarity)=mole of solute ٪ Liter of solution
m (Molality)= mole of solute ٪ Kilograms of solution
ppm (Parts per million)
1st step: grams of solute x1,000,000g of solution
2nd step: Divide answer by grams of solvent

11. Concentration formulas cont.
Mole Fraction
XA =nA ٪ nA +nB
XB =nB ٪ nA +nB
nA =number of moles of solvent
nB =number of moles of solute

12. The End