Across
- 2. - the elements in group 8A of the periodic table
- 4. - a column of elements in a periodic table
- 8. - an arrangement of elements in columns, based on a set of properties that repeat from row to row
- 10. - the elements in group 1A of the periodic table, not including hydrogen
- 11. - elements that are poor conductors of heat and electric current
- 12. (amu) - one twelfth the mass of a carbon-12 atom
- 13. - the elements in group 2A of the periodic table
- 14. - the pattern of repeating properties displayed by elements in the periodic table
Down
- 1. - metals that form a bridge between elements on the left and right sides of the periodic table
- 3. - a row in a periodic table of elements
- 5. - the elements in group 7A of the periodic table
- 6. - elements that are good conductors of heat and electric current
- 7. - an electron that is in the highest occupied energy level of an atom
- 9. - elements with properties that fall between those of metals and nonmetals