Our FREE download of the Conservation of Mass worksheet shows kids how matter is changed in a chemical reaction without being destroyed. Add a little Alka-Seltzer and a Ziploc bag and they can see for themselves.
This site is SO incredibly helpful!! They have awesome teachers who will make understanding even the most complex concepts in Chemistry, Precalculus, Calculus and beyond extremely easy. I am so happy I found it! Also check out their Youtube channel!