Chemistry 

I have added a detailed list of pros and cons on the chemistry talk page why I think the picture with the reaction of water is more appropriate for the page than that of the flasks. I hope to get some feedback from you and the other editor who reverted the first version of the new figure. Next time I add a new figure, I will give a longer explanation up front. Thanks for the suggestion to discuss this on the discussion page. I'm looking forward to a good exchange, and am interested to hear was everyone has to say on this matter.