Chemistry study guide

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Across
  1. 2. changed when combined with another substance
  2. 5. number of characteristics of element that represents number of proton in the nucleus
  3. 8. made of atoms of one kind and can't be separated by chemical reaction
  4. 9. small amount of something
  5. 11. brittle not thin or flat can be a liquid
  6. 14. formed with heat
  7. 15. atomic particles found in the nucleus of an atom and carries a positive charge
  8. 16. mix of metal and nonmetal
  9. 17. weight of substance
  10. 18. electrons in outer most orbital
  11. 22. ring or shell
  12. 23. form something with two substances
Down
  1. 1. thin pieces of metal
  2. 3. rare gas include helium or neon or argon
  3. 4. can't be distorted by a chemical reaction
  4. 6. smallest part of an element
  5. 7. center part of an atom made up of protons or neutrons
  6. 10. row that goes up and down
  7. 12. shiny good conductor of heat and electricity
  8. 13. absorbed heat
  9. 19. atomic particles in the nucleus of an atom and carries a negative charge
  10. 20. horizontal row on the periodic table
  11. 21. letter of up to two to sort out the elements
  12. 24. atomic particles in the nucleus of an atom and carries no change