Chemistry Study Guide

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Across
  1. 1. properties bewtween metals and nonmetals
  2. 5. represents the element
  3. 7. represents the number of protons and electrons
  4. 8. smallest particle of an element
  5. 9. created the periodic table
  6. 10. amount of electrons on the outer orbital
  7. 14. absorbs energy; cold temperature
  8. 15. element not having a metal character
  9. 18. one or more atoms of the same substance
  10. 19. mass of given element
  11. 20. goes around the nucleus of an atom, where electrons exist
  12. 22. negative electrical charge
  13. 25. substance obtained from another substance through chemical change
Down
  1. 2. any closed system subjected to no external forces, the mass is constant irrespective of its changes in form
  2. 3. positive electrical charge
  3. 4. an external layer of metal
  4. 6. substance that is a conductor of electricity and heat
  5. 11. combining two or more substances
  6. 12. substance that changes when combined with other substance through chemical reaction
  7. 13. group of rare gases
  8. 16. gives of heat and energy
  9. 17. neutral electrical charge
  10. 21. left to right on the periodic table
  11. 22. one substance made from atoms
  12. 23. positively charged center of the atom
  13. 24. top to bottom on the periodic table