Chapter 9 Atoms and the Periodic Table- Raegan Fisher

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Across
  1. 2. an electrically neutral subatomic particle in the atomic nucleus
  2. 6. an abbreviation for an element of atom
  3. 8. an extremely small, negatively charged subatomic particle found in the cloud outside the atomic nucleus
  4. 9. any material that is made up of only one type of atom
  5. 10. any member of a set of atoms of the same element whose nuclei contain the same number of protons but different number of neutrons
Down
  1. 1. Table a chart in which all known elements are listed in order of atomic number
  2. 3. the dense, positively charged center of every atom
  3. 4. a count of the number of protons in the atomic nucleus
  4. 5. the mass of an element's atoms; listed in the periodic table as an average value based on relative abundance of the element's isotopes
  5. 7. a positively charged subatomic particle in the atomic nucleus