TLF ID L9126
Select a substance such as iodine and explore how physical changes of state can be brought about by supplying heat energy to the substance. Observe what happens when heat energy is removed. Observe the changes of state at both the physical and particle levels. Explain the different properties of solids and gases in terms of their particle movement. This learning object is one in a series of three objects. The series is also packaged as a combined learning object.