Chemistry Unit 2 Atoms

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Across
  1. 2. Where electrons are, contain subshells
  2. 4. Positive, Negative, Neutral
  3. 5. Within shells have different orbitals
  4. 6. A theory of element creation by adding and electron and proton at the same time(No space)
  5. 9. The smallest unit of energy and mass
  6. 10. Where electrons with certain amounts of energy generally stay(No space)
  7. 11. Within a subshell, where electrons move
  8. 12. The mass of an atom or subatomic particles(No space)
  9. 13. How much matter something has
  10. 15. Keeps the protons and neutrons together(No space)
  11. 17. The number of protons in an object(No space)
  12. 18. How much space is in an object
  13. 20. A subatomic particle with a neutral charge, in the nucleus, determines the atom's isotope
Down
  1. 1. A way to measure mass(No space)
  2. 3. Attraction of two atoms with opposite charges that holds the atoms together(No space)
  3. 6. 6.02x10^23(No space)
  4. 7. A subatomic particle with a positive charge, in the nucleus, determines the element of an atom
  5. 8. A subatomic particle with a negative charge, in the electron cloud, determines the charge of an atom
  6. 14. Says electrons spread out before they pair up(No space)
  7. 16. The center of an atom, has the protons and neutrons
  8. 19. A chemist's dozen 6.02x10^23