1.3 Periodic Table

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Across
  1. 1. The sum of the numbers of protorns and neutrons in the nucleus of an atom
  2. 3. The number of protons in the nucleus
  3. 4. The smallest unit of an element that maintains the properties of that element
  4. 6. A charged particle that forms when an atom or group of atoms gains or loses one more electrons
  5. 8. A subatomic particle that has a negative charge
  6. 9. A subtomic particle that has a positive charge and that is located in the nuecleus of an atom
Down
  1. 2. Area OUSIDE the nucleus of an atom where electrons are most likely to be found
  2. 5. Anything that has mass and takes up space (volume)
  3. 7. A subtomic particle that has no charge and that is located in the nucleus of an atom