Science Challenge #2 Question 1. What element has the smallest atomic weight, on Earth is usually a gas, and has several uses as a fuel? Answer: HYDROGEN (H) Correct responses received from: Jason Coffer, Peter & Merridy Hance, Rob Gibson, Mike McCreary, David Hansmith, Mark Baysinger, Robyn Carillo, Davis Mac Users Group (DMUG), Lorell Miller, John Alden, Joan Gargano, G.M.Wildanger, Dara Yazdani, Aaron Vinck, Michael R. (your second try), Len Padilla, Dylan Ryall, Jennifer LeBlanc, Patrick Walker, Jeff Moran