Ethan taught us about chemical reactions and volcanoes! He used an already made volcano mountain and set it on top of an empty water bottle. He then poured baking soda in the bottle. The exciting part was when he added some vinegar which he had dyed with red food coloring. As soon as that was added, there was a big, bubbly reaction that erupted out of the bottle and poured over the volcano mountain. This was SO cool! We asked Ethan to do this several times for us. We learned that an acid (vinegar) mixed with a base (baking soda) causes a chemical reaction. Thank you, Ethan, for an AWESOME experiment!