Top Five Chemistry Films....

I've asked some of our regular viewers to list their top five videos from the Periodic Table of Videos (we've posted more than 200).

I thought it might be fun - and it's always useful to know what people do and don't like.

The first contribution comes from regular viewer Sarah, known on YouTube as CoolMinty and on Twitter as @SarahScientist

Here are her five choices in "no particular order".

1. CHRISTMAS SPECIAL 2008



Sarah says: "The Christmas Special with the Chemical Sisters is a fun video for my favourite season. I watched this many times when it was first made and thought it a great idea making an instrument out of test tubes. It's nice to see which elements people like and why. I expected Steve Liddle's favourite element to be Uranium and am still intrigued to know what it really is?"

2. EXPLODING CAKE



Sarah says: "It has cake and explosions, need I say more? Lovely way to celebrate PTOV's first birthday."

3. POTASSIUM



Sarah says: "My favourite element, even if some people think it is evil. I learned a bit more about it too."

4. ETHIOPIAN PERIODIC TABLE



Sarah says: "This shows how scientists work when going on trips/conferences/ meetings etc. It is a fine example of science communication, encouraging kids and shows how PTOV's can be used in schools."

5. MERCURY BELL



Sarah says: "Fascinating to see two (eccentric) scientists chatting about chemistry and this shows how innovative science can be."

Thanks again to Sarah.

I'll be posting a few more top fives over the next few weeks or months (including my own, although is that a bit like choosing your favourite child!!!?).

Your own contributions are also welcome.