In this lesson students learn about how energy plays a role in phase changes. This is done through notes, a video, practice questions, and a lab.
For this lesson each lab group needs several resources:
To engage students in the lesson I have them perform several quick review questions.
After the questions I introduce the lesson and then have students talk in their groups about these questions on slide 3 of the PowerPoint:
To help reinforce the concepts that we learned in the lesson I have students perform a heat of fusion lab where they calculate the heat of fusion of ice.
There are several responses for sources of error including:
In terms of the goal of the lab I had expected students to write that they it was found that the heat of fusion of ice was whatever they had calculated and that evidence from their experiment that supports the claim was the data that they had collected. However, I got various responses to this question including:
Some of the common mistakes that student had in the lab include:
Here are several examples of graded student lab. Note that they have different responses for the conclusions and that they have relatively low percent errors.
When students are done with their labs I instruct them to start their homework which is on the last page of the unit6 lecture 4 phase changes graphic notes organizer.