Periodic Table Crossword- Rebecca Russell

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Across
  1. 2. An element in Group 1 of the periodic table.
  2. 3. The average mass of all the isotopes of an element.
  3. 8. An element that lacks most of the properties of metal.
  4. 10. A molecule consisting of two atoms.
  5. 11. An element in Group 18 of the periodic table.
  6. 12. The way a mineral reflects light from its surface; shiny or dullness.
  7. 13. conductivity The ability of an object to carry electric current.
  8. 14. An element found in Group 17 of the periodic table.
  9. 16. A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductility.
  10. 19. The ability of an object to transfer heat.
  11. 20. An arrangement of the elements showing the repeating pattern of their properties.
Down
  1. 1. One of the elements in Group 3 through 12 of the periodic table.
  2. 4. An element in Group 2 of the periodic table.
  3. 5. The ease and speed with which an element combines, or reacts, with other elements and compounds.
  4. 6. A horizontal row of elements in the periodic table.
  5. 7. A one-or-two-letter representation of an element.
  6. 9. A term used to describe materials that can be hammered or rolled into flat sheets.
  7. 15. Elements in the same vertical column of the periodic table; also called family.
  8. 17. A term used to describe a material that can be pulled out into a long wire.
  9. 18. The gradual wearing away of a metal element due to a chemical reaction.