Science Crossword puzzle

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Across
  1. 3. How many main areas does an atom have?
  2. 7. Is the difference on object moves
  3. 8. What are the things that go up and down on the periodic table?
  4. 10. Is a change in speed, direction, or both (Velocity)
  5. 14. Where is the electron located at?
  6. 15. What does the C stand for on the periodic table?
  7. 16. What does the H stand for on the periodic table?
  8. 18. Changes temp, not caused by and outside source
  9. 19. Is an atom the smallest or biggest part of an element?
Down
  1. 1. A new solid form
  2. 2. Which change doesnt have a new substance?
  3. 4. Does the electron have a negtive or positive chrge?
  4. 5. Bubbling, and steaming or odor
  5. 6. What does the O stand for on the periodic table?
  6. 9. Begins to spark or give a glow
  7. 11. Which change does have a new substance?
  8. 12. Is speed plus direction
  9. 13. What are the things that are horizontal and has 7 rings on a periodic table?
  10. 17. What do the Valence Electrons determine?