AP®︎ Chemistry: Topic 3.11 Flashcards

Master key terms and definitions for Topic 3.11 of AP Chemistry – Spectroscopy and the Electromagnetic Spectrum to help you prep for quizzes and the AP exam.

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Term

Electromagnetic Radiation / Radiant Energy

Definition

Energy that travels through space as oscillating electric and magnetic waves.

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Electromagnetic Radiation / Radiant Energy
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Energy that travels through space as oscillating electric and magnetic waves.

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Photon
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A discrete packet of electromagnetic energy absorbed or emitted by matter.

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Wave-Particle Duality
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The idea that light behaves as both a wave and a particle.

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Electromagnetic Spectrum
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The full range of electromagnetic radiation, ordered by wavelength or frequency.

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Spectroscopy
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The study of how matter absorbs, emits, or interacts with electromagnetic radiation.

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Absorption and Emission Spectra
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Patterns formed when matter absorbs specific wavelengths or emits photons at specific wavelengths.

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Wavelength, Frequency, and c = λν
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Wavelength and frequency are inversely related and connected by c = λν.

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Spectral Regions and Energy Transitions
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Microwaves cause rotational changes, infrared causes vibrational changes, and UV-visible causes electronic changes.

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