1. Do Now:

2. Types of Mixtures
Essential Questions: How can you determine what type of mixture something is?

3. What are some Heterogeneous mixtures?
Suspensions: mixtures that seem to be distributed evenly.
Particles are relatively large.
Particles settle out or can be filtered.
Ex: Orange juice with Pulp

4. Heterogeneous mixtures continued…
Colloid: Is a mixture where at least two types of substances are placed together. The substances do not change, each substance retains its own properties. (Ex: Milk (water & fat), yogurt, Cool Whip)
Particles are small.
Particles can not be filtered easily.

5. Colloid Continued…
Detecting colloids is something difficult so shining a beam of light at collide will make the light scatter- this scattering of light by a colloid is called a Tyndall effect.

6. Heterogeneous mixtures continued…
Egg yolks allow oil and vinegar to mix and make mayonnaise.
Emulsions: is a colloid made of liquids that are generally immiscible.
Immiscible: when homogenous mixtures can not be mixed.
Emulsifiers keep layers from separating.

7. What are some Homogenous mixtures?
Alloys: made up of two or more metals dissolved in another.
Properties differ from those of the individual metals.
Brass is made from the mixture of zinc and copper.

8. Homogeneous continued….
Solutions: Particles so small that they cannot even be seen with a microscope and will never settle to the bottom of their container.
One substance dissolves in another.
Solute separates into atoms, ions or molecules when it dissolves.
Salt water
Ex: Vinegar, Hydrogen Peroxide, Salt Water, gasoline, glass cleaner

9. What dissolves in what for solutions?
Draw the Picture!
Solute: is the substance that DISSOLVES.
Solvent: is the substance in which the solute dissolves.

10. Summary
Please take this time to write a summary of this lecture at the end of your notes.