Espectroscopia
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- Ratings
- 1
- Cards
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- 3 days ago
What is the interaction called when different forms of electromagnetic radiation interact with atoms and molecules?
- spectroscopy
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What are the different types of spectroscopy dependent on?
- the frequency of the light used
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What is the specific type of spectroscopy mentioned that deals with the UV-Vis range of the electromagnetic spectrum?
- UV-Vis spectroscopy
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What is the term for the movement of an electron from a lower energy level to a higher energy level or vice versa?
- transition
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What is the minimum energy requirement for a transition to occur?
- the energy of the absorbed photon must be greater than or equal to the energy difference between the levels
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What happens when an electron reaches a higher energy level?
- It becomes unstable and quickly falls back to a lower energy state, emitting a photon with the same energy difference
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What does the frequency of a photon associated with a transition indicate?
- the energy of the transition
Added 3 days ago
How can elements be identified based on the colors of light emitted by their atoms?
- by examining their emission spectra
Added 3 days ago
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What can scientists use to separate the different wavelengths of light emitted by an element?
- a prism
Added 3 days ago
What technique can be used in the laboratory to distinguish elements?
- the flame test
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What type of radiation in the infrared (IR) region of the spectrum can cause changes in atoms and molecules?
- infrared radiation
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What can the infrared absorption spectrum of a molecule reveal?
- the types of chemical bonds present in the molecule
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What is the law that relates absorbance to concentration in spectrophotometry?
- Beer-Lambert law
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What does the absorbance of a solution measure?
- the amount of light absorbed by the solution
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How is absorbance related to concentration in the Beer-Lambert law?
- A = ɛlc
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What are the discrete packets of energy carried by photons called?
- quanta
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What can be determined from atomic emission spectra?
- information about electronic structure and element identity
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What can be determined from the infrared (IR) absorption spectrum of a molecule?
- information about the chemical structure and types of bonds present
Added 3 days ago
What can be determined using spectrophotometry?
- the concentration of colored compounds in solutions
Added 3 days ago
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