1. Be familiar with the Celsius and Kelvin temperature scales, including:
a. The two fixed points on the Celsius scale; b. the basis of the Kelvin temperature scale (including the term absolute zero); c. convert Celsius degrees to Kelvins; and, convert Kelvins to Celsius degrees.
2. Read a heating or cooling curve (temperature vs. time) to determine phase change temperatures.
I probably talked about this before, but here is a diagram comparing the Fahrenheit, Celsius and Kelvin temperature scales:
Here's a worksheet for practice:
Another basic skill is the reading of a heating / cooling curve. Here's one for example:
A cooling curve is a downward curve -- sort of a mirror image of the curve presented.
Here is a worksheet that you might want to use in the classroom:
This video is a very simple explanation of heating and cooling curves:
Here is a lab collecting time and temperature data that can be plotted for cooling and heating curves. There is a brief introductory talk about Bunsen burner usage as well.
You can't see the narrator, but he's wearing goggles! Protect your eyes! *Protect your students' eyes!*
Also, be careful with this cooling bath set-up -- I know I've had a student knock it over before!
Here is a full lab manual including this experiment -- it's the 2nd experiment in the book:
I have chosen not to include a lab using the TI-84 temperature sensor because not everyone has access to them. One sensor is $29 (without shipping and sales tax), so a class set of 12 is $348 before shipping and tax. Maybe your department could buy one every year to get a class set.
Here's the page of Vernier sensors available for your examination:
*I'd love to hear from you -- tell me about your lab experiences, ask your questions, or share your ideas for other topics for this blog!
For other lab ideas, check out my lab book "Chemistry on a Budget" at amazon.com:
Each lab is presented with two possible report formats -- both with the same procedure -- one with 10 questions to be answered as a conclusion, the other with a full laboratory report required. This was to give the teacher the option of what type of report is desired!
Have a good week!