A Crystal A
seed crystal is dropped into an unstable supersaturated
solution of sodium acetate.
Physics The Levitron spins and surfs on magnetic waves! Pass
your hand above, underneath, and around the top. It will continue to
spin and float only touching air! The LEVITRON
floats free in space, supported only by the repelling magnetic force
produced by permanent magnets.
Nitrogen Explosion Liquid nitrogen explodes a soda bottle in just a few seconds. Enough to send a bucket a few hundred feet into the air.
Project #4 Freezing while Boiling @ Room Temperature
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.
In A Bottle This
Demonstration shows the catalytic decomposition of hydrogen peroxide.
Styrofoam is a polymer and when brought into contact with
acetone the polymer breaks down into its monomers. This
demonstration show the process of depolymerization. It looks pretty
Plasma from Grapes
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.
Of A Pickle Starring Jim Cramer
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
This experiment is intended to introduce
students to hydrated compounds. These compounds have water
molecules coordinated in their chemical structures. Examples
Notice each formula has a "*" between the
compound's formula and the number of water molecules that are
coordinated in the structure. the "*" represents a
weak chemical bond known as a hydration bond. This bond is
usually easily broken by heating the compound.
Hydrogen Bomb (out takes) The
picture may look like a mushroom cloud, but it is actually a can filled