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CP Chemistry
WS Energy
Date_____________ Pd.____
1. An atom in the lowest possible energy state is in its _____________ state.
2. Explain and diagram the process in which an atom emits light to form an atomic
3. What can an atomic spectrum be used for? What device enables this use?
4. Circle the type of EM radiation with the highest energy.
a. a. Blue Light
Yellow Light
Violet Light
b. b. Micro Waves
Ultraviolet Rays
Green Light
5. If energy is added to a wave:
a. What happens to the wavelength?
b. What happens to the frequency?
6. Find the energy of a wave with a frequency of 4.99 x 109 Hz.
7. Find the frequency of a wave with 3.512 x 10-22 J of energy.
8. Find the energy of a wave with a wavelength of 9.33 x 10-9 m.
9. If hydrogen emits blue light at 7.32 x1016 Hz, how much energy is there in each photon?
10. Is matter a wave or a particle? Explain.
11. Explain the contributions from each scientist to the quantum mechanical model:
a. Planck.
b. Hertz.
c. Einstein.
d. Schrödinger
12. If it takes 8.17 x 10-19 J of energy to remove an electron from gold, what is the
wavelength of light needed? (Hint: Use both E = hv and c = λv)