Freezing/Melting Container: In the Freezing and Melting simulator, you model liquid-solid phase transitions using an open container partially filled with a liquid or solid. The container has sensitive hotspots into which you can plug in meters that measure the density, volume, and temperature of the liquid or solid. The figure to the right indicates where you hook up those meters. To place the meters, you must click directly on a hotspot (note position of cursor).

To obtain an ultrascopic view, you only need to click inside the liquid or solid with the Ultrascope View tool.

You can heat or cool the container using the heater/cooler element located under it.

In the Properties Box of the container, you can determine the state of the material inside the container (liquid or solid).

You can also determine the type of material by the strength of molecular attractor (low, low/medium, or high), or you can choose water/ice. Materials with higher molecular attractions have higher freezing points.

The inital temperature of the substance depends upon the type of substance and whether it is in liquid or solid form.