Subject: what daily items in experiment depict th chemical reaction of the brain?

I am currently working on a Brain project for Science, and although I was never 
previously interested in such things, I admit it has triggered my curiosity.  
While researching the brain I frequently come across the fact that the brain is 
a chemical reaction.  I think it would be well worth the time and effort if I 
could create an experiment representing this for my personal enjoyment.  

Re: what daily items in experiment depict th chemical reaction of the brain?