Evan Lumbrezer Burkholder 9

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Across
  1. 1. a vertical column in the periodic table; also known as a family of elements\
  2. 3. An extremely small, negatively charged subatomic particle found in a cloud outsside the atomic nucleusE
  3. 7. A small, discrete packet of light energy
  4. 8. table A chart in which all known elements are listed in order of atomic number
  5. 9. mass the mass of an element's atoms; listed in the periodic table as an average value based on the relative abundance of the element's isotopes
  6. 10. model A representation of an object on some convenient scale
Down
  1. 2. A positively charged subatomic particle in the atomic nucleus
  2. 3. formula a notation that uses the atomic symbol and (sometimes) a numerical subscipt to denote how many atoms are bonded in one unit of an element
  3. 4. model a representation of a system that helps us predict how the system behaves
  4. 5. An electrically neutral subatomic particle in the atomic nucleus
  5. 6. in the context of physics, the time required for a vibration or a wave to make one complete cycle. In chemistry, a horizontal row in the periodic table