Chemistry Review

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