Across
- 6. it is used for X-Ray
- 8. is important for the hydration
- 9. the last shell of the atom
- 10. space an object or substance takes
Down
- 1. not having a reaction
- 2. use to deter chemical reactions
- 3. only exists in the form of a single atom
- 4. it has a charge
- 5. it will mix with something
- 7. is important for photosynthesis