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high school chemistry

Tom Kuntzleman's picture

Nail Bottle Demonstration in Slow Motion

Fri, 02/21/2014 - 11:27 -- Tom Kuntzleman

The nail bottle demonstration is one that many of us have conducted in our classes. To perform this demonstration, 2 – 3 mL of ethanol is placed into a plastic bottle that has two nails punctured into opposite sides of the bottle. After stoppering the bottle, a Tesla coil is touched to one of the nails. A spark jumps from one nail to the other, which initiates the combustion of vaporized ethanol inside the bottle. We recently filmed this reaction with our high speed video camera.

Lowell Thomson's picture

The power of seeing the chemistry in action

Tue, 01/21/2014 - 21:51 -- Lowell Thomson
Distillation of ethanol

As I maneuver through the school year, a certain rhythm develops. The start of the year brings the excitement of new classes and new students. I'm often trying new things in the fall as I've reflected on the previous year's teaching over the summer. The energy level is certainly much higher at this time than almost any other.

Deanna Cullen's picture

Types of Chemical Reactions

Wed, 01/15/2014 - 17:23 -- Deanna Cullen

I expect that most high school chemistry teachers assign some type of laboratory related to types of chemical reactions including synthesis, decomposition, single replacement and double replacement reactions. I have used several published versions, but I am sharing my modifications.

Time required: 

20 minutes prep, 40 minutes laboratory, 15-20 minutes discussion

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