Properties of Elements (atoms & molecules)

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Across
  1. 2. elements that are good conductors of electricity and thermal energy and are often solid at room temperature
  2. 3. characteristics of elements that help to identify what they are
  3. 5. a particle of matter with a charge of +1
  4. 7. elements arranged in vertical columns of the periodic table that share the same properties
  5. 9. the number of protons in the nucleus of each element
  6. 11. the average mass of the nucleus of that element
  7. 12. repeating rows of the periodic table that demonstrate patterns of how elements are arranged
Down
  1. 1. a particle of matter with a charge of 0
  2. 4. a particle of matter with a charge of -1
  3. 6. an abbreviation for the name of an element on the periodic table
  4. 8. the basic unit of matter made up of protons, neutrons, and electrons
  5. 10. pure substances made of only one type of atom