Experiment 2 - Spectroscopy Flashcards
What energy transition is associated with Far Infrared and Microwave rays?
Molecular rotations
Explain the difference between an emission spectrum and an absorption spectrum
An emission spectrum shows the radiation emitted by a substance, while an absorption spectrum shows the absorbed frequencies
What energy transitions are associated with Radio-wave rays?
Nuclear and Electron spin
What energy transition is associated with Near UV and Visible rays?
Valence electrons
Explain the difference between a line spectrum and a continuous spectrum
Line spectra contain only certain frequencies, while continuous spectra emit all frequencies
What is white light?
The band of radiation that the human eye is sensitive to
What is a transmission diffraction grating?
A sheet of transparent plastic that has thousands of tiny grooves and separates light by wave interference
Define spectroscopy
Spectroscopy is the study of the interaction of electromagnetic radiation with matter
What energy transition is associated with Y-rays?
Nuclear
What is a source of line spectra?
Excited atoms of chemical elements
Which color has the highest frequency?
Violet
What energy transition is associated with X-rays?
Inner-shell electrons
What energy transition is associated with Vacuum UV rays?
Middle-Shell electrons
How will the spectroscope be calibrated?
The spectroscope will be calibrated using known wavelengths. The wavelengths will be measured and plotted on a graph, and the calibration line will be calculated
What wavelength range does white light cover?
400 nm to 800 nm
What is a source of continuous spectra?
A lightbulb
