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1. See page 92, Figure 18 in Chemistry Holt text: Copy, by
drawing/coloring on your paper, the electromagnetic spectrum, both the visible spectrum(with colored pencils or crayons) and the other (lower on page)part of the spectrum.
2. See page 92, Figure 18 in Chemistry Holt text: Notice the relative
wavelength and frequency numbers at each end of the overall spectrum.
Write a statement that summarizes the number pattern. [Ideas to put in your summary: What do the numbers mean?{ nm = nanometer = 10 -9 m; pm = picometer =
10 -12 m; Hz = Hertz = 1/sec; MHz = megahertz = 10 6 Hz }, how do the numbers change from one end to the other (get bigger or smaller), how do wavelength and frequency relate to each other (same trend or opposite trend)…]
3. See page 92, Figure 18 in Chemistry Holt text: Using your knowledge of the relationship (direct or indirect) of energy to wavelength and frequency, add to the figure: the Energy spectrum (no specific numbers, put high and low at the appropriate ends).
4. See page 92, Figure 18 in Chemistry Holt text: Notice that visible light is a very small portion of the spectrum that has been expanded in the figure. a. Make sure you have filled in the colors of the visible spectrum. b. Write on your figure: i. the high and low wavelength ends of the visible spectrum. ii. the high and low frequency ends of the visible spectrum.
iii. the high and low energy ends of the visible spectrum.
5. Explain the differences and similarities between red light and
violet light, in terms of c(speed),  (wavelength)
(see page 93 for help)
 (frequency) 
E (energy).

6
. To explore the relationship between the speed of light and wavelength and frequency solve the following problems with this formula: and
 x
 = c
, c
= 3.00 x 10 8 m/sec
Calculate the following, include correct units and sig. figs ., show your work.
{Remember that the frequency unit is Hz = Hertz = 1/sec}: a.
Find the frequency,  if  = 4.56 x 10 -4 m b.
Find the wavelength,  , if  = 8.34 x 10 13 1/sec c.
Red light has a wavelength (  of approximately 7.00 x 10 -9 m.
Calculate the frequency of red light. d.
Green light has a frequency of approximately 5.45 x 10 wavelength of green light.
16 Hz. Calculate the
7. To explore the relationship between Energy (E), wavelength (  )and frequency
(  of light, solve the following problems. Include correct units and sig. figs your work.
., show
E = h  h = 6.63 x 10 -34 J sec = Planck’s constant a.
Find the energy of a light photon, if the frequency is 8.15 x 10 20 Hz. b.
Find the frequency of a light photon if the energy is 3.18 x 10 -21 J
8.
Mathematically combine the two equations E = h  and   x
 = c , a.
Find the energy of a light photon, if the wavelength is 4.40 x 10 -4 m. b.
Find the wavelength of a light photon if the energy is 1.56 x 10 -15 J.