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If you have any comments, suggestions or questions about the site or experiments we did, please fill free to contact us using the form bellow. Also if you would like to participate or just give thought on how to develop or integrate new concept you are most welcome to share your point of view.

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Looking forward to your feedback,

Filip & Marijeta


i hate writing titles to messages

thanks for your experiments, indeed exciting to watch.

Thursday, 25 December 2008 12:05

Great Site!

I'm just wondering where I can get some Reichardt’s Dye for one of your lovely experiments.

If anyone knows where I can find some, please post a comment asto where.

Thanks in advanced!


Saturday, 20 December 2008 21:22



Awesome site! Very useful and good explanations.

I tried the Bromine reaction to Aluminium for a project, which was beyond all expectations, so thanks! 

Sunday, 30 November 2008 16:11



it¬īs me, bianca again.

after looking more exactly to your webside, i found the experiment :D

and i can only support the other. your website is great!

your bianca


Sunday, 30 November 2008 12:39



i¬īm fom germany and my english isn¬īt very well, but i hope, that you will understand me.

i watched on chilloutzone¬†an experience¬†called¬†mercury(II) thiocyanate decompostion is initiated by heating. and at the end i saw this adress. but i can¬īt find it on your side. can you help me? that would be very nice.

your bianca geertsema


Saturday, 29 November 2008 18:30


Great job with this website! very interesting

I also am a chemist! 

my english is not perfect, attempt to improve it, I'm sorry for this but I wanted to congratulate you!

you can visit my blog, sometimes I speak about chemistry!


greetings from Barcelona


Monday, 24 November 2008 22:40

Very nice

Very nice. Keep 'em coming. And thanks

Andrew Scott


Wednesday, 19 November 2008 20:50

Thank you for reading!

Hey, people. Thank you for making more complex chemistry experiments. I was specially looking for nickel complexes, exactly one of the last videos you made. I just love this field of inorganic chemistry, as it summarizes acid-base chemistry and molecular orbit theories.

Best regards,

Luis Borja, Santa Marta, Colombia

Friday, 31 October 2008 02:12

Funny :)

Hi guys i like all of your expiriments , i would like to do this, but can you tell me something more abouth this expiriment please 



Thank you guys and girls <3  

Wednesday, 29 October 2008 02:32

You guys do a great job

Hi I live in Greece 


and was trying to explain to my little niece why chemystry is important. Now after seing all those "funny" (chemical) reactions she is eager (she is 9) to learn more about the elements and "be able to perform all that herself" :-) 

Good job keep it up

Saturday, 18 October 2008 19:02

Nice effort of divulgation


I find your page through the video about solvatochromism in YouTube.

At this time, the technological advantages that internet offers to the people is a powerfull tool of communication, so, shows these classical laboratory experiences to the non scientific community is a heroic effort of divulgation. Keep with this remarkable work.

From several years I have been working with solvatochromic probes as polarity sensors, an in my opinion there is a little error in the explanation of the phenomenon. The schematically explanation of the electronic transition (charge transfer) of  Et-30 betaine is a little confuse I think. That scheme, shows an ionized oxygen atom in the polar form (assumed as ground state, this is not necessarily true, is a combination of the two canonical limit forms whit a bigger percentage of the first) of the compound and when this dye absorbs a photon is transformed to a radical hydroxyl group, and the same fact is shown in the pyridinium acceptor moiety.

Several theoretical calculations shows that HOMO-LUMO transition is dominant in the CT band observed, and the HOMO and LUMO are over the phenoxide and pydinium moieties respectively, so the correct scheme must illustrate just a charge delocalization instead of a hydrogen atom migration.  


Moisés Domínguez,

Universidad de Santiago de Chile, Chile.

Sunday, 12 October 2008 04:51

Nice finding

I'm ammused for finding this site. I'm a complete chemistry geek, just can't help it.


Could you please make more complex chemistry experiments like the ones you did (color-changing CoCl2 and Orange Tornado)?

 Greetings from Santa Marta, Colombia, South America.

Tuesday, 07 October 2008 22:44

Great site

This site is awesome! The experiments are very impressive and the site design very nice. Thanks a lot!

I love to see the vids! 

Tuesday, 30 September 2008 13:15

Love your work

I Am a chemistry teacher and I LOVE your site! Good work!

Thursday, 25 September 2008 09:33


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