CB Chemistry Final Exam

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Across
  1. 3. the variable in an experiment that the scientist changes
  2. 5. the state of matter with no defined shape or volume
  3. 8. The scientist credited for discovering the nucleus
  4. 10. The ability of an element to attract electrons in a bond
  5. 13. physical property that is independent of amount of material
  6. 15. VSEPR shape of water
  7. 17. VSEPR shape with three total atoms, and no lone pairs on central
  8. 19. the time it takes for half of the atoms of radioactive material go through decay
  9. 20. completed the oil drop experiment to calculate the charge and mass of an electron
  10. 21. Considered the father of the periodic table
  11. 24. a helium nucleus is known as an _____ particle
  12. 25. as the wavelength of a wave ______ the energy decreases
Down
  1. 1. part of a nuclear power plant that slow the fission chain reaction called the ______ rods
  2. 2. calculated by taking the mass of an object divided by the volume
  3. 4. gases elements with a very high ionization energy and zero electronegativity
  4. 6. The number of protons is known as the (blank) number
  5. 7. a change in matter that does not change the identity of the substance
  6. 9. the mass number is calculated by adding the number of protons and ______ together
  7. 11. energy required to remove an electron from an atom is called the ______ energy
  8. 12. a well developed explanation that has been tested many times by many experiments and has shown to be true
  9. 14. VSEPR shape where the central atom is bonded to 4 other atoms
  10. 16. the number of valence electrons in the halogens
  11. 18. type of nuclear radiation that is not a particle, but a wave of energy
  12. 22. the variable in an experiment that changes as a result
  13. 23. a temporary explanation of an observation that needs investigated