Chemistry

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Across
  1. 4. an element with 27 protons
  2. 6. what is the mass number of calcium
  3. 7. travels at the speed up of 3.00x10^8 m/s
  4. 8. cause metals to eject their electrons
  5. 11. What is an atom with the same number of electrons as protons
  6. 12. the weight of an element minus the atomic number equals the amount of what
  7. 13. atoms that lose electrons have what time of ions
  8. 14. equals the amount of protons
  9. 15. used to transmit information
  10. 19. atoms with the same number of protons but different numbers of neutrons
  11. 21. what is the element name of HE
  12. 22. equals the number of electrons
  13. 24. can hold two electrons each
  14. 25. when an atom emits energy, the electrons move from an excited state to their ground state and give off what
  15. 27. an atom that has gained or lost one of more electrons
  16. 29. atoms that gain electrons have what time of ions
  17. 30. Rutherfords gold foil experiment is about discovering what
Down
  1. 1. How many electrons can the F subshell hold
  2. 2. The number of protons are referred to what
  3. 3. what is placed in the bracket when writing short hand notation
  4. 5. Which element has a shorthand configuration of [Ne]3s2 3p1
  5. 9. Atoms are made up of what type of particles
  6. 10. what is everything made up of
  7. 14. when an atom absorbs energy from a flame they become
  8. 16. the flame color is described in terms of its what
  9. 17. What is the element name of NA
  10. 18. what is the net charge of hydrogen
  11. 20. how many p orbitals can there be in an energy level
  12. 23. during reactions, positions are very unstable so the electrons would quickly drop back down to where
  13. 26. any of the one or more orbitals making up an electron shell of an atom
  14. 28. the maximum amount of displacement of a particle on the medium from its rest position