Across
- 1. very reactive nonmetals
- 6. the smallest unit of a chemical element
- 8. dense group that tend to react with water
- 10. elements having properties of both metals and nonmetals
- 11. elements which are good conductors, malleable, and lusterous
- 13. negative subatomic partciles
- 14. number of protons of an atom
- 15. elements which are poor conductors, brittle
Down
- 2. most reactive group in the periodic table
- 3. a family of elements with similar chemical properties
- 4. atoms of the same element having the same atomic number but different atomic mass
- 5. inert unreactive elements
- 7. A substance that cannot be broken down any further
- 9. number of protons and neutrons of an atom
- 12. a repeating pattern in the periodic table running horizontally