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iheartfood Group Title

#1: In the electromagnetic spectrum, which of the following types of radiation has less energy than visible light? A. microwaves B. ultraviolet C. X rays D. gamma rays **my answer: A. microwaves

  • one year ago
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  1. aaronq Group Title
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    yep!

    • one year ago
  2. iheartfood Group Title
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    #2: Which of the following colors of light has the highest energy? A. red B. green C. blue D. violet **my answer: D. violet

    • one year ago
  3. aaronq Group Title
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    correct!

    • one year ago
  4. iheartfood Group Title
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    #3: What happens when an electron falls to a lower energy level? A. The electron absorbs energy. B. The electron releases energy. C. The electron takes on a higher frequency. D. The electron takes on a lower frequency. **my answer: B. releases energy

    • one year ago
  5. aaronq Group Title
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    once again, correct!

    • one year ago
  6. iheartfood Group Title
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    #4: Planck's equation E = h × v is used to determine which of the following? A. the color of the lines on the atomic spectrum for an atom B. the energy released as an electron moves to a lower orbital C. the energy released as an electron moves to a higher orbital D. the number of lines on the atomic spectrum for an atom ***my answer: B

    • one year ago
  7. iheartfood Group Title
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    #5: Electron A emits mainly violet light when excited. Electron B emits primarily yellow light when excited. What can be said about the transition between energy electrons A and B? A. The distance between the energy levels for Atom A is greater than for Atom B. B. The distance between the energy levels for Atom A is less than for Atom B. C. The number of energy levels jumped by electrons is more for Atom A than for Atom B. D. The number of energy levels jumped by electrons is more for Atom B than for Atom A. **My answer: A. The distance between the energy levels for Atom A is greater than for Atom B.

    • one year ago
  8. iheartfood Group Title
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    #6: According to Einstein, why does the photoelectric effect occur? A. The photoelectric effect changes with the emission of an atomic spectrum. B. The photoelectric effect is related to the number of electrons in the shells around a nucleus. C. The photoelectric effect is due to the release of electrons from atoms. D. The photoelectric effect has to do with the number of atoms in a material. ***im not too sure about this one but i would guess C.... idk is that right??? @aaronq ??

    • one year ago
  9. aaronq Group Title
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    5 and 6 are right, but #4 I'm not sure, because you can't calculate the energy released or absorbed from the excitation or relaxation of electrons with E=hv

    • one year ago
  10. iheartfood Group Title
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    nvm oh okay, thanks!! :)

    • one year ago
  11. aaronq Group Title
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    hmm well B sounds right but you'd have to know the wavelength

    • one year ago
  12. iheartfood Group Title
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    yeah its oaky, ill ask my teacher :P but i think its B :D

    • one year ago
  13. aaronq Group Title
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    to calculate the energy released from an electron from a specific orbital you'd have to use this

    • one year ago
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  14. iheartfood Group Title
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    oh oaky, thanks!! :)

    • one year ago
  15. aaronq Group Title
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    so i think #4 is A haha

    • one year ago
  16. iheartfood Group Title
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    oh okay, thanks!! :P

    • one year ago
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