Chapter 9 Crossword Jacob Riggs

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Across
  1. 3. Any member of a set of atoms of the same element whose nuclei contain the same number of protons but different number of neutrons.
  2. 6. A chart in which all known elements are listed in order of atomic number.
  3. 9. A count of the number of protons in the atomic nucleus.
  4. 10. An electrically neutral subatomic particle in the atomic nucleus.
  5. 11. A vertical column in the periodic table; also known as a family of elements.
Down
  1. 1. 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.
  2. 2. 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.
  3. 4. An extremely small, negatively charged subatomic particle found in a cloud outside the atomic nucleus.
  4. 5. An abbreviation for an element or atom.
  5. 7. Any material that is made up of only one type of atom.
  6. 8. A positively charged subatomic particle in the atomic nucleus.