We worked on two projects-- Foil Leaf Relief  and Foil Collage Art.  I wasn't exactly pleased the results on these projects--not really the "wow" factor that I was hoping for.  
Chemistry-- First, we played around with combining vinegar and baking soda--just for fun!
Our lesson was on acids and bases.  I found quite a bit of free informational readings and this experiment sheet from TpT when I put in the search "acids and bases".   I had quite a bit of litmus paper left over from high school chemistry last year, so win-win!  
PH scale
I found these cute science plates and thought they were perfect for our snack time!
 

 
