Periodic Table Terms

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Across
  1. 2. A one or two letter abbreviation of an element
  2. 4. A reaction that absorbs energy in the form of heat
  3. 7. Found on the right of the periodic table line
  4. 10. Found on the left of the periodic table line
  5. 11. Tells how many protons are found in an element
  6. 12. Positively charged subatomic particle
  7. 13. Can form chemical bonds
  8. 14. Tells the average number of protons and neutrons
  9. 16. Bond that forms between a nonmetal and another nonmetal
  10. 18. A reaction that releases energy in the form of heat
  11. 19. Also called a column
  12. 20. Bond that forms between a metal and nonmetal
Down
  1. 1. Found on the line
  2. 3. Also called a row
  3. 5. Low chemical reactivity and are found to the right of the periodic table line
  4. 6. Characteristic of something when it goes under a chemical reaction
  5. 8. Characteristic of something that can be seen without the object changing
  6. 9. Uncharged subatomic particle
  7. 15. A number that indicates how many atoms an element contains
  8. 17. Negatively charged subatomic particle