Across
- 1. Center of atom
- 4. Measurement of matter
- 6. The original way the period table was organized
- 7. Electrons on the outer shell
- 8. Relies solely on valence electrons
- 10. The number of protons and neutrons in a atom
- 13. Father of the periodic table
- 15. The particles look different
- 16. Negative Charge
- 19. Depicts the Atom as a small positively charged nucleus
- 20. form as a result of elements losing or gaining electrons
Down
- 2. Pure substance that cannot be broken down
- 3. The second way the periodic table was organized
- 5. All the particles look the same
- 9. composed of two or more compounds physically combined
- 11. The basic unit of all matter
- 12. The outside part of the atom
- 14. No Charge
- 17. Positive Charge
- 18. A substance made up of two or more elements chemically combined