Wednesday, January 25, 2012

Popcorn lab!


For this lab, we made-yes-POPCORN!

Here, popcorn kernels (approximately 25-30) were placed in a 100 ml beaker with enough vegetable oil in it to cover the bottom (the oil came out fast, so we had a little bit more!). This was covered by an aluminum foil film. 

From here the Bunson burner was turned on just below the beaker, boiling the vegetable oil. It was noticed that the kernels appeared to be releasing air through their tips! 

Soon, the popcorn started to pop and eventually, vapor was collecting in the upper part of the beaker, just under the aluminum and releasing through holes poked into it. The popcorn appeared to be very white!

After turning off the burner, the beaker was left to cool off for several minutes. Finally, the beaker was weighed. At the end of the project, the solution weighed less than the beginning.

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