Vocabulary Choice Board Crossword Puzzle - Unit 3

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Across
  1. 5. A positively charged ion
  2. 8. Control center of the cell and contains protons and neutrons
  3. 10. the sum of the number of neutrons and protons in an atomic nucleus
  4. 12. A subatomic particle that has no charge and that is found in the nucleus of an atom
  5. 13. An atom or group of atoms that has a positive or negative charge.
Down
  1. 1. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  2. 2. A subatomic particle that has a negative charge and that is found outside the nucleus of an atom
  3. 3. the number of protons in the nucleus of an atom
  4. 4. The average mass of all the isotopes of an element
  5. 6. A horizontal row of elements in the periodic table
  6. 7. Atoms of the same element that have different numbers of neutrons
  7. 9. Vertical column in the periodic table
  8. 11. A negatively charged ion