Chemistry stuff

1. An element that burns very brightly
4. The most common element in the universe
6. A reaction where the chemical structure stays the same; 100% reversible if you had, like, infinitely precise telekinesis+pyromancy or something.
9. A chemical reaction where molecules split into atoms/smaller molecules
11. An atom with more/less neutrons than it normally has
13. Dihydrogen monoxide:

2. People know this for being found in bananas
3. How many of this there are determines what element an atom is:
5. If you hit a chameleon with a hammer and it changes color, what type of reaction caused the change in color?
7. The element that’s essential for pretty much any form of life (that we know of)
8. The suffix for any element at the end of a compound/molecule is:
10. The prefix for “four”
11. An atom with more/less electrons than it normally has
12. A rare element abbreviated as “B” (the Kid’s trusty steed):