Materials used: Sugar
Beaker
Buntzen Burner
Cup with Water
In school we performed a lab relating to sugar. First we got a sugar cube and licked it. It tasted sweet. We were also supposed to observe it. It was hard, white and cubicle, unlike the marshmallow. Then we had to crush it and dissolve it into the water. It tasted like tea. Our next lab involving sugar was to burn it. We observed it and crushed it, just like the previous one. However, this time we burnt it over the Buntzen Burner. It turned black, just like the picture. After it cooled down, our teacher, Mrs. Rousseau, had to break the beaker to get the sugar out. It was black, hard and sort of like a crystal now. Next we were instructed to taste it. It tasted bitter and disgusting, just like the burnt marshmallow, except worse.
As we burnt the sugar, only one item was left...... carbon. The carbon caused the bitter taste. That was a chemical change. The purpose of this lab was to observe a chemical change and physical change, and to show the difference between them. We were also supposed to seperate a mixture. This lab showed how chemical change can affect an original item. That is why we experimented with this lab.
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