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Chemistry: Spectral Lines Flashcards | StudBud
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Chemistry: Spectral Lines
Chemistry: Spectral Lines
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In this lesson, you will identify spectral lines for elements. #science #chemistry
Flashcards
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1
White light, which consists of all frequencies, forms which type of spectrum?
a line spectrum
an absorption spectrum
a continuous spectrum
an emission spectrum
2
Which of the following determines the range of spectral lines produced during electron transition?
the number of electrons under electron transition at the same time
the lower energy level to which the electron returns
the higher energy level to which the electron jumps
the total number of energy levels the electron can jump to
3
Which of the following is correct?
Gas atoms heated to a high temperature emit white light.
Gas atoms subjected to electricity emit bright lines of light.
Gas atoms under high pressure emit dark lines against continuous spectrum.
Gas atoms absorb white light and emit a continuous spectrum of light.
4
A photon has a wavelength of 6.2 meters. Calculate the energy of the photon in joules.
13.702 × 10-42 joules
41.08 × 10-34 joules
3.564 × 10-43 joules
3.204 × 10-26 joules
5
What is wavelength if energy 5.518 × 10-26 J; Planck’s constant is 6.626 × 10-34 J*s; speed of light is 2.998 × 108 m/s?
3.6 m
0.277 m
1.096 m
2.586 m
6
What is energy if wavelength is 4.5 x 10-7 m; Planck’s constant is 6.626 x 10-34 J*s; speed of light is 2.998 x 108 m/s?
9.9456 x 10-49 joules
4.4143 x 10-19 joules
2.9817 x 10-40 joules
6.6745 x 10-26 joules second
7
What is the name of the state when electrons absorb energy and move to a higher energy level?
illuminated state
excited state
ground state
diffused state
8
When an electron jumps from a high energy state to a lower state, what form does the emitted energy take?
an emitted proton
an emitted ion
an emitted photon
an emitted neutron
9
What is energy if wavelength is 11.56 m; Planck’s constant is 6.626 x 10-34 J*s; the speed of light is 2.998 x 108 m/s?
7.659 x 10-35 joules
5.32 x 1042 joules
1.718 x 10-26 joules
2.555 x 10-41 joules second
10
What happens when an atom is exposed to an energy source such as electricity?
The electrons may move to a lower energy level.
The electrons move closer to the nucleus.
The electrons emit a continuous spectrum.
The electrons may jump to a higher energy level.
11
Which energy transition may take place in the atom if its electron has absorbed a photon?
n = 3 to n = 2
n = 5 to n = 1
n = 5 to n = 2
n = 1 to n = 3
12
Which spectrum of hydrogen consists of the Lyman, Balmer, and Paschen series?
translational spectrum
serial spectrum
continuous spectrum
line spectrum
