Freezing point depression lab
The freezing point depression lab simulates dissolving substances in water and chilling in an ice/water/salt bath until freezing.
Setup
The Freezing-Point menu provides two options. The first option sets up the experiment. Select the compound and mass to be used, and check the box to dissolve it in a given amount of water. Your lab manual should have details on experiment setup.
The second menu option sets the starting and target temperature. These are preset, but this menu option must be selected prior to starting the experiment.
Running the experiment
Click on the beaker to start the experiment. The indicator on the Chill-O-Matic(tm) pedestal will turn blue, indicating cooling is occuring. The temperature is decreased by 0.05 C per second, so students will need to pay attention! The freezing transition is set to be obvious. Clicking the beaker again stops time.