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by BlastRoom
Read line spectra and connect line patterns to atomic energy levels.
#physics
50 questions
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An unknown gas and three reference spectra are shown. Which reference has the same bright-line pattern as the unknown?
Use the stacked spectra to identify the unknown sample. Which element's reference lines align with every unknown line?
The unknown tube is compared with four references. Which gas produced the unknown bright-line spectrum?
Which labeled reference spectrum matches the unknown sample?
A sample spectrum is shown above four references. Which element is present in the sample?
The unknown spectrum is plotted on the same wavelength scale as four references. Which reference identifies the gas?
A discharge tube gives the unknown pattern shown. Which reference spectrum should be used to identify the gas?
Look for the reference whose bright lines sit directly below the unknown lines. Which element is it?
A sample and four possible element spectra are shown. Which element's line pattern is identical to the sample's?
Which reference spectrum has lines at all the same positions as the unknown?
An unknown gas gives the bright-line spectrum shown. Which reference spectrum matches it?
Match the unknown spectrum to the element reference with the same pattern of lines.
A gas is unknown, but its spectrum is compared with references. Which reference identifies it?
Which element's reference spectrum matches the unknown sample shown at the top?
The figure shows bright colored lines on a dark background. What produced this spectrum?
What produced the spectrum shown?
A spectrum has only narrow bright lines at selected wavelengths on a dark field. Which description fits it?
A star's light is spread by a prism into a continuous rainbow band, but narrow black lines appear at 410 nm, 434 nm, 486 nm, and 656 nm. Which source-and-spectrum pair is correct?
The figure shows separated bright lines, not a full rainbow. What kind of spectrum is it?
White light is spread by a prism into a continuous band, but dark lines cross it at 405 nm, 436 nm, 546 nm, 577 nm, and 579 nm. Which interpretation is best?
A discharge tube produces the pattern of bright lines shown. Which statement is correct?
White light passes through a cooler sodium vapor sample, and missing wavelengths appear as dark lines at 568 nm, 589 nm, 590 nm, and 616 nm on an otherwise continuous band. What is the spectrum called?
A hot thin gas alone gives the bright-line pattern shown. Which source description matches the figure?
Light from a hot filament passes through a cooler gas, leaving dark gaps at 540 nm, 585 nm, 603 nm, 640 nm, and 693 nm. What happened inside the gas atoms at those wavelengths?
Which explanation matches the bright-line spectrum in the figure?
Black lines appear at 447 nm, 502 nm, 588 nm, and 668 nm on an otherwise continuous band. Which lab setup would create this pattern?
The figure shows the emission lines of a sample on a wavelength scale. Find the line with the longest wavelength. About what is its wavelength?
In the spectrum shown, which line corresponds to the highest photon energy?
Which line in the printed spectrum has the lowest frequency?
Rank these spectral lines from shortest wavelength to longest wavelength.
Which line was produced by the transition that released the least photon energy?
For the lines shown, which ordering is from highest frequency to lowest frequency?
Which line in the spectrum represents the largest energy transition?
Which line has the greatest wavelength in this spectrum?
Which line in the figure has the greatest photon energy?
From lowest photon energy to highest photon energy, which order is correct?
The spectrum includes a close pair at 589 nm and 590 nm. Which one has slightly higher frequency?
Which transition released a photon with the smallest energy?
Which line has the shortest wavelength in the figure?
Order the lines from lowest frequency to highest frequency.
Which line in the spectrum would have the smallest photon momentum?
A detector compares the energies of the photons shown. Which line's photons carry the most energy?
Which statement correctly compares the 568 nm and 616 nm lines?
Why does a hot low-pressure gas emit only separated bright lines instead of every visible color?
A hot solid filament gives a continuous spectrum, while a thin gas tube gives line spectra. What is the key atomic reason for the gas lines?
In an emission spectrum, what determines the wavelength of each line?
Why can a spectrum identify an element in a gas sample?
An electron in an excited atom drops to a lower energy level. What happens to the atom's energy difference?
Why do absorption lines occur at the same wavelengths as an element's emission lines?
A student says a brighter spectral line must mean each photon in that line has more energy. What is the correction?
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Wave-Particle Duality and Superposition
40 questions
