IR Spectroscopy Worksheet
This worksheet covers fundamental concepts of Infrared (IR) Spectroscopy for Grade 9 science students, including its purpose, how it works, and common functional groups.
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IR Spectroscopy Worksheet
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Read each question carefully and provide your best answer. This worksheet will test your knowledge of IR Spectroscopy.
1. What does IR spectroscopy primarily measure?
The mass of a molecule
The vibrations of bonds within a molecule
The electronic transitions in an atom
The nuclear spin of an atom
2. Which region of the electromagnetic spectrum is used in IR spectroscopy?
Ultraviolet
Visible light
Infrared
X-ray
3. In IR spectroscopy, different functional groups absorb infrared radiation at frequencies.
4. The region of an IR spectrum is typically used to identify specific functional groups.
5. All molecular vibrations are IR active.
True
False
6. A strong IR absorption indicates a large change in dipole moment during vibration.
True
False
7. Briefly explain the basic principle of how IR spectroscopy works to identify molecules.
8. Name two common functional groups and describe what their characteristic IR absorption peaks might indicate.
Use the words below to complete the sentences.
9. IR spectroscopy works by measuring the transitions of molecules.
10. For a bond to be IR active, there must be a change in its during vibration.
11. The unique absorption pattern in the lower frequency range of an IR spectrum is often called the region.
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