1. Understanding Solutions
Chapter 7 section 1

2. What is a Solution
Solution: Is a uniform mixture that contains a solvent and at least one solute.
Solvent: The part of solution present in large amount.
Solute: Is the substance that is present in a solution in smaller amount and is dissolved by the solvent.
A solution contains particles that are too small to see and it had the same properties throughout.

3. Dissolving one substance into another is an example of Physical change.
Water is a universal solvent meaning it can dissolve many substances in it.
Many other solutions are made with substances other than water example: Brass, Gasoline, Air (solid, liquid and gas).

4. Colloids and Suspensions
Not all mixtures are solutions
Colloids: Is a mixture that contains small, undissolved particles that do not settle out. A colloid contains large particles than a solution. The particles are still too small to be seen easily, but large enough to scatter light beam. Examples: Milk, Fog, Gelatin, mayonnaise, shaving cream.

5. Suspensions: Is a mixture in which particles can be seen and easily separated by settling or filtration. A suspension does not have the same properties throughout. It contains visible particles that are larger than the particles in solutions or colloids. Example: Snow globe

6. Particles in a Solution
When a solution forms, particles of the solvent surround and separate the particles of the solute.
Solutions of ionic compounds conduct electric current.
Solutions of Molecular compounds do not conduct electric current.

7. Effects of Solutes on Solvents
Solutes lower the freezing point and raise the boiling point of a solvent.