4. My symbol is H My atomic # is 1 My neighbor is Helium
5. I I was 1st recognized as a distinct element by Henry Cavendish in 1766 I was 1st artificially produced by T. Von Honhenhelm
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8. In Water I am: H 2 0 In Ammonia I am: NH 3 In Methane I am: CH 4 And in table sugar: C 12 H 22 O 11 I make up 75% of the universe . My Compounds But I am relatively rare on Earth .
9. A Joke about Me Two hydrogen atoms bumped into each other ... One said: "Why do you look so sad?" The other responded: "I lost an electron." Concerned, One asked "Are you sure?" The other replied "I'm positive.