Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
What is the fingerprint region in an infrared spectrum?
the section from 2,500 - 3,500 cm-1
the section from 3,500 - 4,500 cm-1
the section from 500 - 1,500 cm-1
the section from 1,500 - 2,500 cm-1
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Which of the following greenhouse gases absorbs infrared radiation through its C=O bond?
methane
nitrous oxide
carbon dioxide
water vapor
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Which of the following statements about the greenhouse effect is true?
the greenhouse effect is not influenced by human activities
rising greenhouse gas levels reduce the greenhouse effect
greenhouse gases absorb incoming solar radiation
greenhouse gases re-radiate some heat back to Earth
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Which of the following statements about infrared spectroscopy and global warming is true?
infrared spectroscopy cannot be used to measure changing greenhouse gas concentrations over time
infrared spectroscopy studies provide data demonstrating human activity is increasing the greenhouse effect
infrared spectroscopy studies indicate that global temperatures are decreasing
infrared spectroscopy studies show that human activity has no impact on the greenhouse effect
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Which of the following bonds is associated with the greenhouse gas methane?
O-H
C-H
C=O
N-H
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What happens when the frequency of infrared radiation matches the natural frequency of a covalent bond?
the bond reflects the radiation
the bond absorbs the radiation
the bond emits the radiation
the bond is unaffected by the radiation
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Which of the following statements about the fingerprint region is true?
it cannot be used to check compound purity
it produces a pattern unique to each different molecule
it is not useful for identifying unknown compounds
it is the same for all molecules
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Infrared spectroscopy takes advantage of the fact that bonds in molecules can vibrate at specific natural frequencies.
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