15.3. Colloids and Suspensions http://www.ck12.org
e. car exhaust- When driving through fog with your headlights on, you may witness the Tyndall effect. Explain this in terms
of the type of mixture that is interacting with the light from the headlights.
Further Reading / Supplemental Links
- Review of the differences between suspensions, colloids, and solutions: http://www.youtube.com/watch?v=3
ROWXs3jtQU - Tyndall effect animation: http://www.youtube.com/watch?v=V7eqD-Jw6m4
- Classification table of colloids: http://en.wikipedia.org/wiki/Continuous_phase
Points to Consider
- If you were to shake a mixture of vinegar and oil, the container will often feel cool to the touch. This indicates
that energy in the form of heat has entered the system. What would your explanation for this be? - We did not discuss whether or not colloids and suspensions have conductive properties. We saw in a previous
lesson that some solutions are conductive. How might you test whether or not a colloid or suspension is
conductive?