Wednesday, 6 July 2011

Elephants Toothpaste

In chemistry today students learnt about collision theory and reaction rates.

First Anthony Armstrong (Academy Chemistry teacher) explained the collision theory and activation energy of reactions.

This was followed by Colin Grace (Academy Chemistry teacher) reinforcing the concepts through demonstrations.

1. Corn bomb explosion : showing the state of subdivision.

Light flame
First explosion: blink and you miss
For those who did not see the
explosion it was captured on video.
Trial 4 and BANG!
2. Elephant's toothpaste : Some reactions need a catalyst

3. How can we measure the rate of a reaction?
PINK -->

                                                  BLUE --> GREEN
Colour Change Gas evolved

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