Across
- 4. Metals : Elements in groups 3-12, often used in jewelry and tools
- 5. An element that is shiny, malleable, and conducts electricity
- 7. A table that organizes elements by atomic number and properties
- 10. An element with properties of both metals and nonmetals
- 11. A horizontal row in the periodic table
- 13. The number of protons in an atom’s nucleus
- 15. Group 18 elements, nonreactive and stable
Down
- 1. Group 1 elements, very reactive
- 2. An element that is dull, brittle, and a poor conductor
- 3. Group 17 elements, very reactive nonmetals
- 6. The ability of an atom to attract electrons
- 8. A vertical column in the periodic table
- 9. Earth Metals : Group 2 elements, reactive but less so than Group 1
- 12. The weighted average mass of an element’s atoms
- 14. How likely an element is to undergo a chemical reaction