Chemistry study guide review

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Across
  1. 3. what outer covering is typically metal
  2. 6. on pt this is called a group on which table
  3. 8. : this is in the center of an atom
  4. 9. this is a substance that can not be broken down into simpler substances
  5. 10. this is a reaction in which heat is absorbed
  6. 12. this is the smallest particle of a chemical element
  7. 13. Meatal this is not Malleable
  8. 16. this is a good conductor of electricity
  9. 17. this is where an electron is likely to be found
  10. 18. mass this is the average mass of atoms in an element
  11. 19. mendeleveve he created the periodic table
  12. 20. this is the result of joining two or more substances chemicals together
  13. 23. this is formed from a reaction
Down
  1. 1. this is abreveation for a element on the periodic table
  2. 2. electron this is a electron in the outer edge of an atom
  3. 4. on pt this is horizontal rows on which table
  4. 5. atomic particles carry no electric charge
  5. 7. this is part of a chemical reaction
  6. 9. atomic particles that move around the nucleus have negative electric charge
  7. 10. this is a reaction in which heat is realized
  8. 11. this has characteristics of a metal and non metal
  9. 14. gasses this is group on the periodic table
  10. 15. of conservation of mass which law states that mass is neither created nor destroyed during a chemical reaction
  11. 21. this is found in the nucleus of an atom
  12. 22. : this is the smallest part of an element