Chemistry

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Across
  1. 3. A class of elements characterized by physical properties.
  2. 6. An element in group 1 of the periodic table.
  3. 7. A horizontal row of elements in the periodic table.
  4. 11. An element in group 18 of the periodic table.
  5. 13. Negatively charged particle that moves around the outside of and atom.
  6. 14. An element that lacks most of the properties of a metal.
Down
  1. 1. An element in group 2 of the periodic table.
  2. 2. An element that has some characteristics of both metals and nonmetals.
  3. 4. One of the elements in groups 3 through 12 of the periodic table.
  4. 5. A region of an atom in which electrons of the same energy are likely to be found.
  5. 8. A small particle in the nucleus of the atom, with no electral charge.
  6. 9. Elements in the same vertical column of the periodic table.
  7. 10. An element found in group 17 of the periodic table.
  8. 12. Positively charged particles that are found in the nucleus of and atom.