North Carolina Museum of Life and Science
Duke Chemistry is proud to support the North Caroline Museum of Life and Science by donating liquid nitrogen to the The Lab for demonstrations of Super Cool Fun With Liquid Nitrogen.
Duke alumni, Kate DeAlmeida, demonstrates the unique and fascinating properties of liquid nitrogen and its effects on everday objects.
As liquid nitrogen boils into vapor the pressure builds and makes the tea kettle whistle.
When the ballon is dipped liquid nitrogen the gas inside become very cold
and contracts, shrivelling the balloon.
When the beaker is placed in liquid nitrogen, with a hard boiled egg on top, the
air inside become extremely cold and creates a vaccum that sucks the egg
down into the beaker.
Flowers dipped in liquid nitrogen shatter like glass when tapped on the counter,
because the water inside the plant fibers freezes.
She can't believe a liquid nitrogen frozen banana was used to hammer a
nail into that board.
Lightbulbs are airtight because the tungsten in them burns out upon contact
with oxygen. Put an exposed tungsten coil from a lightbulb in liquid
nitrogen and it keeps glowing.
Add liquid nitrogen to cream, sugar, milk, and vanilla and you have
instant ice cream...and a lot of excited kids!