Chapter 4 Vocab Terms Crossword Puzzle

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Across
  1. 3. 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.
  2. 5. transition metal An element from either of two rows usually placed below the periodic table; a member of either the lanthanide or actinide series. It typically has two valence electrons.
  3. 8. An element with characteristics between those of metals and nonmetals, also called semiconductors, located between metals and nonmetals on the periodic table.
  4. 15. Metal 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.
  5. 16. Table: A table of the chemical elements arranged to display their periodic properties in relation to their atomic numbers.
  6. 17. Metal Any elements in Groups 3-12 of the periodic table, typically having one or two valence electrons, which it easily loses, resulting in cations with charges of 1+ or 2+.
  7. 18. A row in the periodic table of the elements; also called a series.
Down
  1. 1. A measure of an element's ability to attraAtomic Radius: The distance from the center of an atom's nucleus to its outermost energy level.the center of an atom's nucleus to its outermost energy level.
  2. 2. gas: An element in group 18 on the periodic table having eight valences that fill the outer energy level with a full outer energy level.
  3. 4. Group Any of Groups 13-16 in the periodic table; so named because they contain metals, nonmetals, and metalloids. These groups are often named for the first element of the family.
  4. 6. See family.
  5. 7. Electron Any electron in the outermost energy level of a neutral atom. Unpaired valence electrons are usually involved in chemical bonding.
  6. 9. dot notation A representation of an atom consisting of its chemical symbol with surrounding dots representing its valence electron.
  7. 10. Law: The law that states that the properties of the elements vary with their atomic numbers in a regular, repeated pattern.
  8. 11. metal An element in Group 2 of the periodic table, having two valence electrons that tend to lose easily to become a 2+ cation, making it very reactive.
  9. 12. A column of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties; also known as a group.
  10. 13. An element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in the presence of nonmetal elements.
  11. 14. An element in Group 17 of the periodic table with seven valence electrons. It easily gains an electron, forming a 1-anion, which causes it to be highly reactive.