1. Mr. Chapman Chemistry 30

2. What is a solution? A solution is a mixture or a combination of two or more things. A solution is also known as a homogeneous mixture, because both components appear to be the same throughout the mixture. Can you think of examples of homogeneous mixtures?

3. Homo vs. Heterogeneous Mixtures Homogeneous Mixtures Heterogeneous Mixtures The parts of the mixture are not distinguishable, and the solute is completely dissolved in the solvent. In a heterogeneous mixture, the parts of the mixture are clearly distinguishable, and in general can be easily separated. Milk is an example of a homogeneous mixture Pizza is an example of a heterogeneous mixture

4. Dissolving Dissolve – we say something is dissolved when it is caused to go into a solution. We always say that the solute is being dissolved in the solvent. Watch the following video of how salt is dissolved in the solvent, water, to form a solution: http://www.mhhe.com/physsci/chemistry/essentialch emistry/flash/molvie1.swf http://www.mhhe.com/physsci/chemistry/essentialch emistry/flash/molvie1.swf

5. Some Important Definitions... Solution – is the solute and the solvent together Solute – the dissolved matter in a solution Solvent – something that dissolves another substance. Water is a very common solvent. Solubility – the ability to dissolve. We use the term “insoluble” if something does not dissolve.

6. Miscibility Miscible – two liquids that are able to dissolve to form a homogeneous solution. Immiscible – two liquids that are not able to dissolve together. Oil and Water are immiscible – they do NOT mix together to form a solution.

7. The solubility of a substance depends on whether or not the solute is attracted to the solvent.