Matter Unit Vocabulary Review

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Across
  1. 3. An atom or group of atoms that has a positive or negative charge.
  2. 6. Smallest particle of an element
  3. 9. A subatomic particle with no electrical charge
  4. 11. (two words) A chart of the elements showing the repeating pattern of their properties
  5. 13. A positively charged ion
  6. 14. Atoms of the same element that have different numbers of neutrons
  7. 15. Center of an atom
  8. 16. (two words) surrounds the nucleus and contains electrons (nucleus- protons and neutrons, 1st level- 2 electrons, 2nd level- 8 electrons, 3rd level- 8 electrons
Down
  1. 1. A negatively charged ion
  2. 2. A subatomic particle that has a negative charge
  3. 4. (two words) an indicator of the hypothetical charge that an atom would have if all bonds were completely ionic
  4. 5. Vertical column in the periodic table
  5. 6. (two words) Number of protons and neutrons
  6. 7. (two words) Electrons on the outermost energy level of an atom
  7. 8. (two words) the number of protons in an atom
  8. 10. horizontal row in the periodic table
  9. 12. A subatomic particle that has a positive charge