Chemistry Bonus

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Across
  1. 1. elements with properties of metals and nonmetals
  2. 3. bond that transfers electrons between atoms
  3. 5. the change in heat of the products from the reactants
  4. 7. horizontal rows on the periodic table
  5. 8. the study of how heat is converted to and from other forms of energy
  6. 9. the total amount of energy; movement
  7. 10. philosopher who said that matter could broken into smaller parts
  8. 13. transition of substance directly from solid to gas
  9. 14. what matter is composed of
  10. 16. transition of substance directly from gas to solid
  11. 17. how close a series of measurements are to each other
  12. 18. an acid that donates more than one proton per molecule
  13. 20. bond that shares electrons by atoms
  14. 21. the number of figures that are known with some degree of reliability
Down
  1. 2. how close a measured value is to an accepted value
  2. 4. last name of man who created the first periodic table
  3. 6. a mixture that is not uniform
  4. 11. how strongly an atom attracts electrons
  5. 12. a mixture containing particles that settle out
  6. 15. an acid that donates on proton per molecule
  7. 19. vertical rows on the periodic table