Chemistry Review

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Across
  1. 5. The elements are displayed in order by their name in the ___ table
  2. 7. Atoms are mostly made out of ___ space
  3. 8. A unit of energy
  4. 12. What is the atomic number of Helium?
  5. 14. Atoms with a positive charge have fewer electrons than protons are called
  6. 15. Sub-atomic particles with a -1 charge
  7. 16. The relationship between frequency and wavelength are ____ proportional
  8. 19. Sub-Atomic particles with a zero charge
  9. 20. What unit is wavelength measured in?
  10. 23. The elements are ordered by their atomic numbers on the ___ table
  11. 24. In the equation λν = c, what does stand for?
  12. 26. Atoms with the same number of electrons as protons are neutral but atoms with either more or fewer electrons than this are ____
  13. 27. What color of light has a wavelength of 700nm?
  14. 28. In the formula E=HV, H stands for ___’s Constant
  15. 30. When an atom absorbs energy, the electrons move from their ground state to an __ state
  16. 31. Atoms with the same number of protons but different number of neutrons
  17. 32. When every atom is neutral, they are also ____
  18. 34. minimum amount of energy that can be gained or lost by an atom
  19. 36. What did Rutherford’s Gold foil discover?
  20. 40. The equation to find the number of neutrons is Mass ____ Protons
  21. 41. Each element has it’s own atomic _____
  22. 42. An atom’s ___ is based on 3 numbers, protons, electrons, and neutrons
Down
  1. 1. Atoms with a negative charge have more electrons than protons are called
  2. 2. In the formula E=HV, what does the V stand for?
  3. 3. Which color of light has a wavelength of 400nm?
  4. 4. The Gold Foil Experiment calculates the ___ of the Nucleus of an Atom
  5. 6. one/second
  6. 9. What does the E stand for in the equation E=HV
  7. 10. Speed of light is _x10^8 m/s
  8. 11. When a substance is heated in a flame, the atoms ___ energy from the flame
  9. 13. The atomic mass of protons is about ___ amu
  10. 15. Every atom’s nucleus is orbitted by ____
  11. 17. Atoms with different numbers of protons are different _____
  12. 18. When an atom emits energy, the electrons move from an exited state to their ___ state
  13. 21. What does c stand for in the equation λν = c
  14. 22. The number written as a right superscript is the ___ charge
  15. 23. Sub-atomic particles with a +1 charge
  16. 25. The first element on the periodic table
  17. 29. What is everything made up of?
  18. 30. Light at a certain frequency causes metals to ___ their electrons
  19. 33. In a neutral atom, the number of electrons are equal to the number of protons
  20. 35. The number of protons plus the number of neutrons is the ___ of an atom
  21. 37. When an atom has an uneven amount of protons and/or electrons it is _____
  22. 38. The Atomic _____ is also represented by the letter Z
  23. 39. The number of protons is referred to as the ___ number