Light and Electrons

According to the Bohr Model, an electron gains or loses energy by:

• Jumping from an S orbital to a P orbital

• Moving faster or slower in an allowed orbit.

• Jumping from a low energy level to a higher energy level and visa versa.

• Jumping from one atom to another atom.

A hydrogen atom is in a ground state when its electron:

• Remains at the lowest energy level.

• Has moved away from the atom to the ground.

• Is moving back and forth through the nucleus.

• Has stopped moving.

Hydrogen produces a line spectrum in the visible light range with:

• four color lines

• three color lines

• two color lines

• one color line

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

When an electron in a hydrogen atom jumps from an orbit farther from the nucleus to an orbit closer to the nucleus, it:

• emits four photons, one for each of the color lines observed in the line spectrum of hydrogen

• emits a single photon with an energy equal to the energy difference of the two orbits

• emits a number of photons dependent on the number of energy levels jumped over

• none of the above

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

If you view sunlight through a spectroscope you will see:

• You cannot look at sunlight through a spectroscope, it is too dangerous for your eyes

• An emission line spectrum of hydrogen

• An ultraviolet spectrum

• A continuous spectrum

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NGSS.HS-PS4-4

The energy of a photon_____

• Is inversely proportional to the velocity.

• Is inversely proportional to the frequency.

• Is directly proportional to the frequency.

• Varies directly with the velocity, not the frequency.

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NGSS.HS-PS4-1

Which of the following is true about the different regions of the electromagnetic spectrum?

• Yellow light is higher in energy than red light.

• Red light is lower in energy than blue light.

• Both of the above.

• Neither of the above.

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NGSS.HS-PS4-4

The general relationship between energy and wavelength of an electromagnetic wave can be described as:

• indirect

• constant

• disproportional

• direct

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NGSS.HS-PS4-1

Which of the following types of radiation has the highest frequency (look at the back of your periodic table)?

• ultraviolet rays

• microwaves

• X-rays

• infrared radiation

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NGSS.HS-PS4-1

The modern model of the atom describes the:

• speed of the electron

• probability of the electron's location

• probability of the electron's size

• defined path of the electron