Chemistry Vocabulary Crossword (Chapters 3-5)

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Across
  1. 3. An electron emitted during the radioactive decay of a radioactive nucleus.
  2. 5. High-energy particles and radiation emitted by a radioactive substance.
  3. 8. Discrete parcel of light energy.
  4. 10. Positively charged subatomic particle.
  5. 11. Instrument used to observe color components from any light source.
  6. 12. Subatomic particle with no charge (weighs the same as a proton).
  7. 14. Splitting of atomic nucleus into two smaller halves.
  8. 15. Located in the upper right-hand side of the periodic table.
  9. 18. Total mass of the atom (nucleus + electrons)
  10. 20. Horizontal row in the periodic table.
Down
  1. 1. Complete range of waves (radio waves to gamma rays).
  2. 2. Has properties of both metals and nonmetals
  3. 4. Arrangement of an atom’s electrons within orbitals.
  4. 6. “Tiny central core” of an atom.
  5. 7. Homogeneous mixture where different compounds are finely mixed, but not dissolved.
  6. 9. Subatomic particle consisting of two protons and neutrons.
  7. 13. Can conduct electricity/heat, shiny, opaque
  8. 16. Vertical column in the periodic table.
  9. 17. Total number of nucleons (protons + neutrons) in the nucleus.
  10. 19. Mixture of more than one element/compound.