Maybe it's not something to be proud of, but we love these Periodic Table of Videos clips.
This Halloween special shows you how to do something a little different - if you're that way inclined.
But, we wouldn't recommend trying any of these at home.
Our favourite line has to be: "liquid nitrogen is quite cold".
Thanks for the tip!
If you've seen a video online that you want to tell us about email us via the feed back form.