All About Ice Cream
Ice cream is a wonderful treat. But there is more to that…
We all scream for ice cream. My son used to do that. I wondered then how to make a home made ice cream. He almost tasted all flavors- chocolate, choco hazel nut, vanilla, cookies and cream, mango, strawberry, water melon, cheese, rocky road, and many more flavors. Yummy!
Ice cream is sweet, cold, soft, creamy, and colorful too. They are indeed delicious and pleasing in our eyes. But did you know that ice cream can be a key to understand some scientific principles? You can learn about physical science, heat energy, form and phase of matter, and thermodynamics by studying ice cream.
To make a home made ice cream, mix all the ingredients- milk, cream,sugar, water and its flavoring. Blend them together, and they will form a syrupy liquid. Put it in a freezer to transform it in a solid dessert. This explains the form, or phase of matter can be changed by adding or taking away the heat energy- by freezing it. However, the heat energy does not simply vanish. It goes somewhere. Scientists call this principle the first law of thermodynamics. In a home ice cream maker, the heat energy is transferred from the ice cream mix, which has more heat energy to the mixture of ice and rock salt, which has less heat energy. Scientists call this principle the second law of thermodynamics.
Furthermore, when you turn the crank on the home ice cream maker, it stirs tiny bubbles of air about 0.1mm into the mix. This makes the ice cream soft. That is the reason why melted ice cream when restored is hard and unappetizing- more like ice than ice cream because it does not go to the process of ice cream maker and it lacks air. The air makes the ice cream soft. If tiny bubbles of air were not added to ice cream, it would be like eating a sweetened ice cubed. Air is indeed one of the most important ingredients of a delicious ice cream.