Matter Unit Vocabulary Review

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