Physical Science Vocabulary

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Across
  1. 5. negatively charged particle located outside the nucleus.
  2. 7. a curved path of a celestial object or spacecraft around a star ,planet,or moon.
  3. 8. the center of an atom;contains neutrons and protons.
  4. 11. a standard unit of mass that quantifies mass on atomic or molecular scale.
  5. 13. positively charged particle in an atom's nucleus.
  6. 14. negatively charged ion
Down
  1. 1. an outer shell electron associated with an atom.
  2. 2. a positively charged ion.
  3. 3. the number of protons in the nucleus of an atom could determine an element's place in the periodic table.
  4. 4. particle with no charge.
  5. 6. a unit of amount in chemistry.
  6. 9. a particle representing a quantum of light or other electromagnetic radiation.
  7. 10. total number of protons and neutrons in a nucleus.
  8. 12. two or more atoms of the same element having different numbers of neutrons.