Across
- 3. atomic number 25
- 7. fills up any space
- 8. smallest unit of an element
- 9. negative charge
- 12. akilia metal with the atomic number 3
- 15. outermost layer
Down
- 1. atomic number 14
- 2. to compute data
- 4. portion of matter
- 5. chemical element with the atomic number of 5
- 6. universal force
- 10. nonmetallic metal with the atomic number of 7
- 11. element with the atomic number of
- 13. h20
- 14. heat