| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 4C45.00 | Phase Changes: Solid - Solid | | |
| 4C45.10 | phase change in iron | PIRA 1000 | |
| 4C45.10 | phase change in iron | 4C45.10 | |
| 4C45.10 | phase change in iron | Es-7 | A long iron wire heated to 1000 K will sag as it goes through a phase change. |
| 4C45.20 | solid-solid phase projection | AJP 43(7),650 | The salt ammonium nitrate exhibits five phase transitions between 169 C and -16C. Heat the salt on a microscope slide with an electrically conducting coating on one side. |
| 4C45.30 | polymorphism | PIRA 1000 | |
| 4C45.31 | polymorphism | 26-5.18 | Mercury iodide changes from red to yellow at 126 C. Ammonium nitrate has five solid phases at -16, 35, 83, 125 C - best demonstrated between crossed Polaroids on the overhead projector. |
| 4C45.35 | phase transitions - magnetic model | AJP 59(3),260 | A magnetic model demonstrates phase transitions and excitations in molecular crystals. Construction details and hints included along with theory. |