Nerd11

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Across
  1. 4. Simplest building block of matter
  2. 6. A positively charged subatomic particle that is in the nucleus of an atom
  3. 8. A negatively charged subatomic particle that rotates around the nucleus of an atom
  4. 9. When a liquid shifts into a solid
  5. 13. The outermost energy level of an atom
  6. 15. Definite shape and definite volume
  7. 16. Weighted average mass of all isotopes of the element
  8. 17. When a gas shifts into a liquid
  9. 18. high temperature gas
  10. 19. When a solid shifts into a liquid
Down
  1. 1. An organization of elements on a table
  2. 2. When a liquid shifts into a gas
  3. 3. The Arrow that defines the number of valence electrons in an element
  4. 5. Anything that takes up space
  5. 7. A neutral charged subatomic particle that is in the nucleus of an atom
  6. 10. The simplest form of matter
  7. 11. No definite shape and no definite volume
  8. 12. The number that changes the identity of a element
  9. 14. No definite shape and Definite volume
  10. 18. The Arrow that defines the number of energy levels in an element