Chemistry Unit 2 Atoms

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