Blinded me with science

Back in May, I was asked to make cakes for two brothers. This post is about the oldest brother's cake, Silverio. His Mom told me that he is into science and his favorite color is green. Here is his cake...

I was happy to find that there were elements with the symbol of H, B and S to make the top.

Can't have a science cake without some molecules and periodic table tiles.

And of course you need a beaker containing some sparkling chemical.