Across
- 4. water when in a gas from
- 5. natural occurring elements
- 7. a chemical elements
- 8. an alloy of iron and carbon
- 9. a clean alternative to methane
Down
- 1. is a substance of various type
- 2. hot that the electrons are ripped away from the atoms forming an ionized gas
- 3. number 47 of the elements table
- 4. a chemical elements
- 6. iron is a mineral