40+ Super Easy Science Fair Project Ideas For Every Grade ...
Nov 14, 2019·Middle School Science Fair Projects. 21. Density Tower This tower of liquids is like the next-level oil and vinegar experiment. 22. Which Reacts Faster: Small Chunks or Large Tabs of Alka-Seltzer? Did you know that the dissolution of an Alka-Seltzer tab can be qualified as both an explosion and a chemical reaction?