Atomic Structure Vocab

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Across
  1. 2. the number of protons found in the nucleus of an atom, which uniquely identifies it element
  2. 3. a column in the periodic table of elements
  3. 5. the electrons in the outermost shell, or energy level, of an atom
  4. 6. members of a family of an element that all have the same number of protons but different numbers of neutrons
  5. 7. chemical element that exhibits some metal and some nonmetal properties
  6. 11. a chemical element is any substance that cannot be decomposed into simple substances by ordinary chemical processes
  7. 12. smallest unit into which matter can be divided without the release of electrically charged parts
  8. 14. a stable negatively charged component of an atom
Down
  1. 1. a structure model of an atom
  2. 4. the organized array of all the chemical elements in order of increasing atomic number
  3. 8. a subatomic particle with a mass of 1 and a charge of 0
  4. 9. combined mass of all protons, neutrons, and electrons that make up an atom
  5. 10. a column of elements on the periodic table each number of a family has the same number of valence electrons
  6. 13. positively charged particle that resides within the atomic nucleus