Word Search Chemistry Fun!

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Across
  1. 2. The process of transmission of energy in waves through a material or open space
  2. 6. A device that uses heat is used to control a nuclear chain reaction
  3. 10. A subatomic particle with negative charge
  4. 12. Table of chemical elements
  5. 15. Weighted average mass of atoms from the same element
  6. 16. Two or more versions of a chemical element with the same atomic number, but different mass numbers
  7. 18. Mass divided by volume equals _____.
  8. 19. Amount of time taken for half of a radioactive element to decay into something else
  9. 21. A force stronger than the repulsion of protons
  10. 23. Collectively, protons and neutrons are known as ______
Down
  1. 1. A subatomic particle with no/neutral charge
  2. 3. A charged subatomic particle
  3. 4. Rows in a periodic table (shows # of electron shells)
  4. 5. Total number of protons and neutrons in an element’s nucleus
  5. 7. Number of protons in the nucleus that also determines which element it is
  6. 8. Pure energy and has no mass
  7. 9. Happens when a neutron in the nucleus transforms itself into a proton and electrons, then ejects the electrons
  8. 10. A substance that cannot be simpler and are shown on a periodic table
  9. 11. Unit used for radiation
  10. 12. A subatomic particle with positive charge
  11. 13. Occurs when a DNA gene is destroyed/damaged that changes the initial outcome of the gene
  12. 14. Contains protons and neutrons
  13. 17. Happens when the nucleus ejects 2 protons and 2 neutrons
  14. 20. Tiny bit of matter that makes up everything
  15. 22. Columns in a periodic table (# of valence electrons)