unit 2- chemistry

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Across
  1. 2. The arrangement of electrons in an atom
  2. 4. - with no mass that carries a quantum energy
  3. 7. consists of all radiation
  4. 9. atoms that determine the chemical properties of an element and it’s on the outer orbital
  5. 10. atom/atoms with either a positive or negative charge
  6. 11. The shortest distance between equivalent points on a continuous wave Energy-sublevel- The energy levels contained within a principal energy level.
  7. 12. an equation that shows the atomic and mass number
  8. 13. particle with 2 protons and 2 neutrons
  9. 17. ion with a negative charge
  10. 18. a form of energy that travels through space
  11. 19. minimum amount of energy
  12. 20. number of waves that pass a given point
  13. 21. the rays and particles emitted by live materials
Down
  1. 1. a process where substances emit radiation
  2. 3. rule- atoms share, lose, or gain electrons to be stable
  3. 5. Major energy levels of an atom
  4. 6. lowest energy state of an atom
  5. 8. Particle- high-speed charge that is emitted during the decay
  6. 14. A model that uses dots to represent pairs or lines for the bond and it shows how electrons are arranged
  7. 15. ion with a positive charge
  8. 16. Ray- high speed with no electrical charge