Chemistry Mid Term Vocabulary Review

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Across
  1. 1. smallest unit that matter is made of
  2. 2. composed of atoms with the same number of protons
  3. 3. when an atom gains or loses an electron
  4. 4. positively charged subatomic particle
  5. 5. sunatomic particle with no charge
  6. 6. horizontal row on the Periodic Table
  7. 9. Group 17 elements
  8. 10. vertical column on the Periodic Table
  9. 11. negatively charged subatomic particle
Down
  1. 1. Mass = #protons + #neutrons
  2. 2. ability of an atom to attract an electron
  3. 7. reason the atomic mass on the periodic table is not a whole #
  4. 8. difference in electronegativity