Mole Day Crossword

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Across
  1. 2. Avogadro’s hypothesis stated that at a fixed temperature and pressure, equal volumes of gases contain the number of ___
  2. 4. Neon is an example of a __ gas
  3. 5. A mole is defined as the number of atoms of ___-12 found in a 12-gram sample.
  4. 6. smallest unit of ordinary matter that forms a chemical element.
  5. 9. Has an atomic number of 1.
  6. 10. Has a negative electric charge
  7. 12. A scientist who studies chemistry is called a ___
  8. 13. The four states of matter include gas, solid, plasma, and __
  9. 15. Contains 2 oxygen atoms and 2 hydrogen atoms.
Down
  1. 1. Carbon (C), Helium (He), Aluminum (Al) are all examples of __
  2. 3. ‘s number, or 6.02 x 10^23
  3. 7. National Day held on October 23, 1991
  4. 8. a tabular display of the chemical elements.
  5. 11. The scientific study of the properties and behavior of matter
  6. 14. A Subatomic particle with a positive electric charge is called a ___