Name: Class: Date: - Focus 01: Atoms Copyright Macmillan Learning. P...

Name: Class: Date:

Focus 01: Atoms

Copyright Macmillan Learning. Powered by Cognero. Page 1 1.Visible light, microwaves, and x-rays travel through empty space at 3.00 × 10 8 m·s –1 . True or false?

• True
• False

ANSWER: a

2.Which of the following statements regarding electromagnetic radiation is true?

• Electromagnetic radiation with a wavelength of 400 nm travels faster than that with a wavelength of

600 nm.

• The frequency of electromagnetic radiation determines how fast it travels.
• Electromagnetic radiation with a wavelength of 400 nm has a frequency that is smaller than that with

a wavelength of 600 nm.

• Electromagnetic radiation with a wavelength of 600 nm travels faster than that with a wavelength of

400 nm.

• Electromagnetic radiation with a wavelength of 600 nm has a frequency that is smaller than that with

a wavelength of 400 nm.

ANSWER: e

3.Electromagnetic radiation encompasses which of the following?

• Microwaves.
• Alpha particles.
• Gamma radiation.
• A and C above.
• B and C above.

ANSWER: d

4.Which of the following is the highest frequency electromagnetic radiation?

• X-radiation.
• Ultraviolet.
• Visible light.
• Microwave.
• Radio.

ANSWER: a

5.Which of the following is the smallest wavelength electromagnetic radiation?

• Radio.
• Microwave.
• Ultraviolet.
• Visible blue light.
• Infrared.

ANSWER: c

Chemical Principles, The Quest for Insight 8th Edition By Atkins, Jones, Laverman, Young, Patterson (Test Bank All Chapters, 100% Original Verified, A+ Grade) 1 / 4

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• The ultraviolet range encompasses what wavelengths?
• 100 – 450nm.
• 530 – 580 nm.
• 1 – 50 nm.
• 10 – 80 nm.
• 420 – 500 nm.

ANSWER: a

• Wavelength is defined how, in terms of electromagnetic radiation?
• The peak to peak distance between waves.
• The peak to trough distance between waves.
• The speed with which a wave traverses a distance.
• The amplitude with which a wave traverses a distance.
• The trough to peak distance between a wave as well as the speed the wave traverses this distance.

ANSWER: a

• Which of the following statements regarding electromagnetic radiation is true?
• Electromagnetic radiation with a wavelength of 800 nm is in the ultraviolet range.
• Electromagnetic radiation with a wavelength of 900 nm is in the visible light range.
• Electromagnetic radiation with a wavelength of 400 nm is in the visible light range.
• Electromagnetic radiation with a wavelength of 600 nm is in the ultraviolet range.
• Electromagnetic radiation with a wavelength of 600 nm is in the visible light range.

ANSWER: e

• Radiation with a wavelength of 2 – 10 pm is in what part of the electromagnetic spectrum?
• Radio waves.
• Microwave radiation.
• Ultraviolet radiation.
• X – radiation.
• Gamma radiation.

ANSWER: d

• Radiation with a wavelength of 2.2 mm is most likely in what part of the electromagnetic spectrum?
• Cosmic rays.
• X – rays.
• Microwaves.
• Ultraviolet radiation.
• Gamma radiation.

ANSWER: c

• What is the frequency of yellow light with a wavelength of 580 nm? 2 / 4

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• 5.2 × 10

16 Hz

• 1.9 × 10

–17 Hz

• 5.2 × 10

14 Hz

• 5.2 × 10

12 Hz

• 1.9 × 10

–15 Hz

ANSWER: c

• What is the wavelength of a radio station transmitting at 99.1 MHz?
• 330 nm
• 303 nm
• 0.00303 m
• 3.03 m
• 0.330 m

ANSWER: d

• Estimate the frequency of the wave shown below.

• 1.5 × 10

17 s –1

• 3.0 × 10

17 s –1

• 1.0 × 10

17 s –1

• 2.0 × 10

17 s –1

• Not enough information is given to permit calculation of the frequency.

ANSWER: a

• Which of the following has the highest energy per photon?
• Infrared
• Blue light
• Green light
• Orange light
• Red light 3 / 4

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ANSWER: e

• Which of the following has the lowest energy per photon?
• X-radiation
• Ultraviolet
• Visible light
• Microwave
• Radio

ANSWER: e

• A laser emits a pulse of light with an energy of 575 mJ with a wavelength of 266 nm. How many photons

did the laser emit?

• 7.42 × 10

20 photons

• 7.42 × 10

17 photons

• 2.16 × 10

14 photons

• 2.31× 10

–19 photons

• 2.31 × 10

26 photons

ANSWER: b

• What is the wavelength of radiation with a frequency of 2.3 × 10

13 Hz?

• 3.0 × 10

8 m

• 7.6 × 10

5 cm

• 7.6 × 10

5 m

• 1.3 × 10

-5 cm

• 1.3 × 10

-5 m

ANSWER: e

• Radiation with a frequency of 3.9×10

14 /sec has what wavelength?

• 1.3×10

6 m

• 7.7×10

-7 cm

• 7.7×10

-7 m

• 3.1×10

6 m

• 1.3×10

6 cm

ANSWER: c

• What wavelength does radiation possess when its frequency is 2.1 × 10

15 Hz?

• 4.1 × 10

-7 cm

• 1.4 × 10

-7 m

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