Chemistry In Focus
6th Edition
ISBN: 9781305084476
Author: Tro, Nivaldo J., Neu, Don.
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 28E
Make a drawing, such as Figure 7.3, which shows how a yellow object can interact with white light to appear yellow.
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When light hits an object, the object absorbs some of the light and reflects the rest of it. The wavelengths that are reflected determine how our eye perceives the color. Why does the human eye perceive a red colored dress as the color red?
a)The moeclues of the dress do not absorb red light wavelengths.
b)A red dress will primarily absorb red light wavelengths.
c)The molecules of the dress absorb green and blue light wavelengths.
d)A red dress will not absorb light wavelengths from non-red colors.
black colored algae is very dark because it
absorbs what range of visible light?
dark blue
all colors
green
both yellow and orange
What determines the color of light? Describe the difference between red light and blue light.
Chapter 7 Solutions
Chemistry In Focus
Ch. 7 - Prob. 7.1YTCh. 7 - The lasers used in supermarket scanners emit red...Ch. 7 - Which photons contain more energy, X-ray photons...Ch. 7 - Arrange the kinds of light listed below in order...Ch. 7 - Prob. 1ECh. 7 - What kinds of molecules are responsible for the...Ch. 7 - Prob. 3ECh. 7 - Prob. 4ECh. 7 - What is the relationship between the wavelength of...Ch. 7 - Prob. 6E
Ch. 7 - Prob. 7ECh. 7 - What prevents large amounts of high-energy UV and...Ch. 7 - Prob. 9ECh. 7 - Prob. 10ECh. 7 - Prob. 11ECh. 7 - Prob. 12ECh. 7 - Prob. 13ECh. 7 - Prob. 14ECh. 7 - Prob. 15ECh. 7 - Prob. 16ECh. 7 - Describe how a laser works.Ch. 7 - Classify each of the following lasers as to type...Ch. 7 - Prob. 19ECh. 7 - Prob. 20ECh. 7 - Prob. 21ECh. 7 - Prob. 22ECh. 7 - Prob. 23ECh. 7 - The speed of sound is 330m/s. If fireworks are...Ch. 7 - The nearest star, Alpha Centauri, is 4.3 light-...Ch. 7 - Counting the seconds between a flash of lightning...Ch. 7 - Make a drawing, such as Figure 7.3, which shows...Ch. 7 - Make a drawing, such as Figure 7.3, which shows...Ch. 7 - Prob. 29ECh. 7 - Arrange the following three frequencies of light...Ch. 7 - Prob. 31ECh. 7 - Which wavelength of light is most likely to cause...Ch. 7 - List two types of electromagnetic radiation that...Ch. 7 - List two types of electromagnetic radiation that...Ch. 7 - Prob. 35ECh. 7 - Prob. 36ECh. 7 - Prob. 37ECh. 7 - Prob. 38ECh. 7 - Calculate the wavelength of the radio waves used...Ch. 7 - Calculate the wavelength of the radio waves used...Ch. 7 - Prob. 41ECh. 7 - Prob. 42ECh. 7 - Prob. 43ECh. 7 - A lamp emits red light of 671nm. What element is...Ch. 7 - Prob. 45ECh. 7 - Prob. 46ECh. 7 - Prob. 47ECh. 7 - Prob. 48ECh. 7 - Describe how white light interacts with a colored...Ch. 7 - Prob. 50ECh. 7 - Prob. 51ECh. 7 - Prob. 52ECh. 7 - Prob. 53ECh. 7 - Prob. 54ECh. 7 - Prob. 55ECh. 7 - Prob. 56ECh. 7 - Prob. 57ECh. 7 - Prob. 58ECh. 7 - Prob. 59E
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- Sunburn is caused by ultraviolet UV radiation. Why does red light not cause sunburn?arrow_forwardWhat kinds of molecules are responsible for the green color in spring leaves and the red color in fall leaves?arrow_forwardWhat prevents large amounts of high-energy UV and X-ray light from reaching Earths surface, where it can adversely affect humans?arrow_forward
- The light produced by a red neon sign is due to the emission of light by excited neon atoms. Qualitatively describe the spectrum produced by passing light from a neon lamp through a prism.arrow_forwardArrange the kinds of light listed below in order of increasing wavelength: Red visible light, blue visible light, infrared light, and X-rays X-ray blue visible red visible infrared infrared red visible blue visible X-ray blue visible red visible X-ray infraredarrow_forwardA prepared solution appeaars orange in color. what color light does this solution reflect? Think about which color(s) are removed from the white light hitting the solution.arrow_forward
- When light source A of a particular color is directed toward the surface of a piece of sodium metal, the result is that no electrons are emitted from the metal surface. When light source B of a different color is directed toward the surface of a piece of sodium metal, the result is that electrons are emitted from the surface of the metal. Light source A Sodium metal Light source B Sodium metalarrow_forwardTrue or False a) The color of an object is the result of the transmission of all colors except the observed color by our eyes. b) The Law of Conservation of Energy describes the relationship between the number of photons absorbed and the number of absorbing molecules in a sample.arrow_forwardWhich of the following is true? A) UV light has higher frequency and longer wavelength than Infrared light. B) UV light has higher frequency and shorter wavelength than Infrared light. C) UV light has lower frequency and longer wavelength than Infrared light. D) UV light has lower frequency and shorter wavelength than Infrared light.arrow_forward
- 5. Light waves slowing down through medium to form a rainbow a.) Reflection b.) Refraction c.) Absorptionarrow_forward3. If the perceived color of a solution is green, what is the approximate wavelength of light that is being absorbed? (Use the color wheel) 630-720 nm violet red deep blue orange light blue yellow yellow- green 490-530 nm green 530-545 nm 580-6 545-580 450-490 nmarrow_forwardWhile boiling potatoes for dinner in salted water, the pot boils over and you notice that the flame on your gas burner turns to bright yellow-orange. How would you explain the appearance of a color in the previously blue flame?arrow_forward
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