Elements

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Across
  1. 3. The average mass of the nucleus of that element
  2. 5. Pure substances that are made of only one type of atom
  3. 6. A property of elements that is determined by when it boils
  4. 7. The basic unit of matter made up of protons, neutrons, and electrons
  5. 8. Elements in column 18 of the periodic table of elements that share similar propertie
  6. 11. Characteristics of elements that help to identify what they are
  7. 13. An abbreviation for the name of an element on the periodic table
  8. 14. Elements that are good conductors of electricity and thermal energy and are often solid at room temperature
Down
  1. 1. Where the protons and neutrons are located in an atom
  2. 2. Property of an element that is determined by if it is magnetic
  3. 4. Mendeleev put the elements on the periodic table in the order of how many ______________________ it has
  4. 9. _____________________________________ are arranged in energy levels outside of the nucleus
  5. 10. Elements arranged in vertical columns of the periodic table that share the same properties
  6. 12. The 7 rows of the periodic table are called