Ch. 16 The Atomic Model

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Across
  1. 2. a positive, neutral or negative description of atomic particles
  2. 4. atoms of the same element that have different numbers of neutrons
  3. 5. a negatively charged particle found outside the nucleus of an atom
  4. 9. the area outside the nucleus of an atom where negatively charged particles can be found
  5. 10. a positively charged particle found in the nucleus of an atom
  6. 11. the atomic mass of an atom rounded to the nearest whole number
  7. 12. indicates that there are an equal number of protons and electrons
  8. 13. particles that make up protons and neutrons
  9. 14. one capital letter or a capital and lower case letter used to represent an element
Down
  1. 1. number of protons plus neutrons in an atom
  2. 3. a number that identifies an atom found on the periodic table
  3. 6. a neutrally charged particle found in the nucleus of an atom
  4. 7. the average mass of one atom of an element found on the periodic table
  5. 8. a representation of something to large or too small to be studied at its normal size