1. Mixtures Lab

2. Mixtures Lab
I. Purpose: -To differentiate between different types of mixtures in the lab (homogeneous vs. heterogeneous, solutions vs. colloids vs. suspensions)
II. Procedure: As directed (with laser safety concern).

3. Mixtures Lab
Data: Make table as shown next slide……

4. III. Data: Mixture Color Clarity Settle? Tyndall Effect Type of A B C
(clear/cloudy)
Settle?
(particles visible?)
Tyndall
Effect
Type of A B C D
filtrate

5. Questions (use complete sentences):
1. How does the Tyndall Effect work?
2. If you had a gray mixture that had particles collected on the bottom, was cloudy, and showed a strong Tyndall effect, what kind of mixture is it? “Shake Well”
3. If you had a green mixture that was clear, had no Tyndall effect, and no suspended particles or precipitate, what kind of mixture is it?
4. If you had a red mixture that was clear, showed a strong Tyndall effect, but had no particles on the bottom, what kind of mixture is it?
5. Can you filter a suspension and make it a solution? Why?

6. V. Conclusion:
Be sure to include a discussion of how one can discern differences between the various types of mixtures.