Mix two teaspoons of salt with the ice in Cup A. Do nothing with Cup B. Suspend both cups into two calibrated beakers and allow the melting ice to drip into the bottom of the beaker. Have students create a table to record their data. Begin timing the melting process with a stop watch. Every sixty seconds record the amount of water in Beaker A and Beaker B. Record for a total of 15 minutes. Ask students which cup produced the most water.
Students can create a graph of the data to display the results.
Ask students to develop hypotheses to explain why salt had this effect on ice. Activity B - Super Cool 1. Label the beakers A and B. 2. Place an unfrozen freeze pop in each of the beakers so that it is surrounded by ice. Freeze pops are popcicles with a plastic wrap, and can be purchased in most grocery stores.