Volunteers to clean up (not after an explosion)
That is the question every chemistry students wants to know.
We have not blown anything up yet but I did do a cool demo found on stumbleupon.com
The challenge is to pick up a nickel (without touching the matches) resting on a match box with a match's base leaning on it and the business end of the match resting on the business end of a match that is place vertically on top of the match box. If you do it right it looks like this:
If you want to just see it here it is:
here are a few shots along the way with our density column lab:

And our physical and chemical changes lab.




Separation of sulphur and iron filings by magneticism
Separation of sand and salt by filtration