I scream. You scream. We all scream for ... LIN cream?
That's what kindergarten students at Mahoning Elementary School recently were treated to during a Liquid Nitrogen presentation by representatives from Air Products.
Vicky Kocher, kindergarten teacher, explained the reason for the science presentation was the class had just read a book about dairy and the process it goes through to get from the cow to the child. The book also showed the process of making ice cream.
Kocher added that she learned about the Air Products Liquid Nitrogen presentation through one of her students' families.
During the event, Ron Halenar, cylinder maintenance department; Joe Bonner, production supervisor; and Gary Clemson, electrician; taught the students about Liquid Nitrogen and how it is used to store items and keep things frozen.
Bonner explained that Liquid Nitrogen is used for a variety of things, from frozen food storage to automobile parts and NASA testing, because of its liquid and gas properties.
Clemson added that Liquid Nitrogen is minus-325 degrees, and can freeze anything within a short time.
The trio illustrated these points through a variety of experiments that showed expansion and contraction, pressure and freezing.
They used balloons, which when submerged in the chemical, deflate; a metal doughnut and ball to show how metal contracts when it is cold; a hot dog to illustrate how Liquid Nitrogen can harm a person if it comes in contact with the skin; a metal rod attached to a light bulb to show electricity; and a banana to show how quickly it can be frozen.
They also called up Madylin Wolter to be their lovely assistant during one experiment. She was asked to crush a carnation that was flash frozen.
Following the experiments, the students were treated to a special "experiment." That experiment was to make ice cream using Liquid Nitrogen.
Halenar, Bonner and Clemson mixed the ingredients in a large bowl as the children watched and then began to add the Liquid Nitrogen. The mixture steamed as Clemson stirred and Halenar poured. Soon though, the mixture became thick and creamy, turning into ice cream or as the Air Products employees called it "LIN cream."
The students each received a sample of the frozen treat that took only minutes to make. The overwhelming response to the experiment "Delicious!"