AP Chemistry · Unit 3: Properties of Substances and Mixtures

3.11 Spectroscopy and the Electromagnetic Spectrum

In short

You are expected to relate differences in absorption or emission of photons in different spectral regions to specific types of molecular motion or electronic transitions. The required associations are strictly defined as: microwave radiation with transitions in molecular rotational levels, infrared radiation with transitions in molecular vibrational levels, and ultraviolet/visible radiation with transitions in electronic energy levels.

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How is Spectroscopy and the Electromagnetic Spectrum tested on the exam?

You may be assessed on your ability to predict and/or explain chemical properties or phenomena (e.g., of atoms or molecules) using given chemical theories, models, and representations (Suggested Skill 4.A).

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Spectroscopy and the Electromagnetic Spectrum: common questions

What do you need to know about Spectroscopy and the Electromagnetic Spectrum for AP Chemistry?

You are expected to relate differences in absorption or emission of photons in different spectral regions to specific types of molecular motion or electronic transitions. The required associations are strictly defined as: microwave radiation with transitions in molecular rotational levels, infrared radiation with transitions in molecular vibrational levels, and ultraviolet/visible radiation with transitions in electronic energy levels.

How is Spectroscopy and the Electromagnetic Spectrum tested on the AP Chemistry exam?

You may be assessed on your ability to predict and/or explain chemical properties or phenomena (e.g., of atoms or molecules) using given chemical theories, models, and representations (Suggested Skill 4.A).

Where does Spectroscopy and the Electromagnetic Spectrum fit in AP Chemistry?

Spectroscopy and the Electromagnetic Spectrum is topic 3.11 in Unit 3: Properties of Substances and Mixtures of AP Chemistry.

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