Atomic Spectra
Quiz by nadine diab
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10 questions
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- Q1Why can each element be identified by its line spectrum?Because elements can only be identified by their massBecause all elements emit the same line spectrumBecause each element produces a unique set of spectral linesBecause line spectra change with temperature30s
- Q2What are the two types of line spectra?Reflection and refraction spectraContinuous and discrete spectraVisible and ultraviolet spectraEmission spectra and absorption spectra30s
- Q3What phenomenon occurs when excited atoms emit light at specific wavelengths, resulting in a series of colored lines with dark spaces?Continuous spectraRainbow spectraWhite light spectraLine spectra30s
- Q4What causes the dark spaces between the colored lines in a line spectrum?Absence of emitted light at specific wavelengthsInterference from other colorsRefractive index changesReflection of light30s
- Q5What criteria are used to differentiate between emission and absorption spectra?Absorption spectra are brighter than emission spectraEmission spectra show emitted light, while absorption spectra show light that has been absorbedEmission spectra occur only at low temperaturesBoth show emitted light but in different colors30s
- Q6What is the significance of dark lines in an absorption spectrum?They show the intensity of emitted lightThey represent specific wavelengths of light that have been absorbed by the atomsThey are caused by background radiationThey indicate wavelengths that cannot be observed30s
- Q7How does the movement of electrons between energy levels relate to line spectra?Only neutrons influence line spectraElectrons do not affect line spectraLine spectra are produced by protons moving between positionsElectrons emit or absorb light when they transition between energy levels30s
- Q8What determines the specific colors observed in an atomic emission spectrum?The temperature of the atomThe mass of the atomThe pressure of the surrounding environmentThe differences in energy levels of electrons within the atom30s
- Q9Which of the following best describes an emission spectrum?It shows a smooth gradient of colorsIt has dark lines on a bright backgroundIt is a continuous range of wavelengths without gapsIt shows bright lines on a dark background representing light emitted by excited atoms30s
- Q10What can be inferred if two elements have identical line spectra?They are likely the same elementThey are completely unrelatedThey have no chemical propertiesThey must have different atomic masses30s