Across
- 3. A positively charged particle in an atom
- 6. Are dull, brittle and nonconductive
- 10. Behave like both metals and nonmetals
- 11. Is the same as the # of protons in an atom
- 12. Made up of more than one element
- 14. The sum of the protons and neutrons in an atom
- 15. Something with more than one atom
- 16. One way of cleaning water
- 17. Are shiny, malleable and conductive
Down
- 1. An atom with a + or - charge
- 2. The columns on the periodic table
- 4. A neutral particle in an atom
- 5. The rows on the periodic table
- 7. The smallest unit of matter
- 8. A negatively charged particle in an atom
- 9. The name of the chemical H20
- 13. Chemistry is the study of this
- 15. The "father of the periodic table"