FINAL EXAM CH-7-14

Which of these colors of visible light has the shortest wavelength?

• red

• green

• yellow

• blue

• violate

The wavelengths of green and red lights are 500 nm and 700 nm, respectively. Which of the following statements is correct?

• The frequency of green light is more than the frequency of red light.

• The frequency of green light is less than the frequency of red light.

• The energy of green light is less than the energy of red light.

• The frequency of green light is equal to the frequency of red light.

• The energy of green light is equal to the energy of red light.

Arrange these spectral regions in order of increasing frequency (X-rays, Microwaves, Ultraviolet, Visible).

• Microwaves < Visible < Ultraviolet < X-rays

• Microwaves < Visible < X-rays < Ultraviolet

• Ultraviolet < X-rays < Visible < Microwaves

• Ultraviolet < Visible < X-rays < Microwaves

• X-rays < Microwaves < Ultraviolet < Visible

Arrange these spectral regions in order of increasing energy (Infrared, Microwaves, Ultraviolet, Visible).

• Microwaves < Infrared < Visible < Ultraviolet

• Microwaves < Visible < Infrared < Ultraviolet

• Ultraviolet < Infrared < Visible < Microwaves

• Ultraviolet < Visible < Infrared < Microwaves

• Infrared < Microwaves < Ultraviolet < Visible

Energy of light is _____.

• proportional to its frequency and wavelength

• inversely proportional to its frequency and wavelength

• proportional to its frequency and inversely proportional to its wavelength

• inversely proportional to its frequency and proportional to its wavelength

• independent of its frequency and energy

Which of these statements is/are true?
I. As wavelength increases, frequency decreases.

II. As energy increases, frequency decreases.

III. As wavelength increases, energy decreases.

IV. The product of wavelength and frequency is constant.

• I, III, and IV

• I and II

• I, II, and IV

• III and IV

• II, III, and IV

Which of these colors of visible light has the lowest energy?

• red

• orange

• yellow

• blue

• violet

Which of these forms of electromagnetic radiation has the highest energy?

• X-rays

• Microwaves

• Gamma rays

• Radio waves

• Infrared rays

If the chemical reaction A + B → C is exothermic, then which of the following is true?

• The reaction C → A + B is exothermic.

• The reaction C → A + B is endothermic.

• The product C must be a gas.

• The product C cannot be a gas.

• The reactant A must be a solid.

If the normal body temperature is 98.6°F, what is the corresponding temperature in Kelvin?

• 23 K

• 37 K

• 119 K

• 177 K

• 310. K