Across
- 3. Number of forklifts that run on hydrogen cells
- 4. Year the first hydrogen cell was created
- 9. Hydrogen is _______________
- 12. Hydrogen cells were used in these NASA missions with help from GE
- 16. These are stripped from the hydrogen atom to generate kinetic energy
- 18. Not found alone in nature
Down
- 1. Efficiency of a hydrogen cell automobile
- 2. year of reaching the estimated target price
- 5. First name of engineer who developed the first fuel cell
- 6. The company with the most hydrogen cell generators
- 7. What the positively charged hydrogen ions travel through to get to the oxygen atoms
- 8. Number of commercial automobiles that run on hydrogen power
- 10. Required for producing cheap hydrogen gas
- 11. Fist man who put a hydrogen cell into an automobile in 1991
- 13. There are over 100 of these powered by hydrogen cells
- 14. Rare earth metal required for production of hydrogen fuel cells
- 15. Number of demonstration models of hydrogen cars in 2011
- 17. bonds with the hydrogen ions to make water