This can actually happen. It seems unnatural, but the laws of physics don't lie. Liquids require heat to boil, and if the conditions are right one liquid can be boiled in order to freeze a second. Under a vacuum, the water in an acetone/water mixture can freeze while the acetone boils. Watch the video and see for yourself.

DO NOT TRY THIS AT HOME it can ruin your microwave or burn down your house. Now you are going to see why it is dangerous to put grapes in the microwave.

The Electric Pickle chemistry demonstration is a way for students to see how excited electrons will emit light when they fall back to the ground state. Since pickles are soaked in salt, Na+ and Cl- ions are present. Thus pickle will conduct electricity. The Na+ when excited will emit an orange yellow color when the electrons fall to the ground state. If I were a Physics teacher I could use the demonstration to show resistance in an electricity unit. Alas, I do not teach Physics.

A difficult concept for many students to understand is the energy involved in breaking and forming bonds. A hydrate is a substance that has water bonded to it. In order to dehydrate you must add energy (endothermic) to break the bond to water. When hydrating you are forming a bond to water and will release energy (exothermic). This visual demonstration reinforces the concept.