Across
- 5. an element in group 1 of the periodic table, having one valence electron that it can easily lose to form a 1+ cation, making it extremely reactive; the most reactive of all the metals
- 6. An element that is typically dense, solid, ductile, malleable, highly conductive and chemically reactive, especially in the presence of nonmetal elements; metals are located on the left end of the periodic table.
- 9. a column of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties; also known as a group
- 11. an element in group 17 of the periodic table having seven valence electrons; it easily gains an electrons, forming an 1- anion, which causes it to be highly reactive
- 13. an element in group 18 on the periodic table having eight valence electrons that fill the outer energy level(helium is an exception with only two); With a full outer energy level, it is insert(nonreactive)
- 14. the law that states that properties of the elements vary with their atomic numbers in a regular; repeated pattern
- 15. an element that typically has four or more valence electrons and that does not exhibit the general properties of metals; located on the right side of the periodic table
- 16. any elements in groups 3-12 of the periodic table, typically having one or two valence electrons, which it easily loses, resulting on cations with charges of 1+ or 2+
- 18. an element in groups of 2 of the periodic table, having two valence electrons that it tends to lose easily to become a 2+ cation, making it very reactive.
Down
- 1. an element from either two rows usually placed below the periodic table; a member of either the lanthanide or actinide series; it typically had two valence electrons
- 2. the distance form the center of an atom's nucleus to its outermost energy level
- 3. any electron in the outermost energy level of a neutral atom; unpaired valence electrons are usually involved in chemical bonding
- 4. an element with characteristics between those metals and nonmetals
- 7. a representation of an atom consisting of its chemical symbol with surrounding dots representing its chemical symbol with surrounding dots representing its valence electrons
- 8. a row on the periodic table of elements; also called a series
- 10. a measure of an element's ability to attract and hold electrons when bonded to other atoms
- 12. a table of chemical elements arranged to display their periodic properties in relation to their atomic numbers
- 17. any of groups 13-16 in the periodic table; so named because they contain metals metals, nonmetals and metalloids; these groups are often named for the first elements in the family