Atomic Emission Flashcard

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Spectral lines

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Dark or bright lines in a spectrum corresponding to specific wavelengths of light emitted or absorbed by an atom or molecule.

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Emission spectra: unique light pattern from an atom/molecule transitioning from higher to lower energy state.

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Unique light pattern from higher to lower energy state.

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Purpose of flame tests in atomic emission

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Identify specific elements in a sample by the flame color when heated.

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Formation of spectral lines

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Atoms or molecules absorb or emit light at specific wavelengths.

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Relationship between spectral lines and energy levels.

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Spectral lines arise from electron transitions between energy levels in an atom.

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Types of emission spectra:

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continuous, line, and band spectra

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Flame tests identify elements by the color of the flame when heated.

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Color of the flame produced when heated.

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Principle of flame tests

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Different elements emit distinct colors of light when heated in a flame.

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Factors affecting flame color in tests:

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Presence of specific elements or compounds

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Importance of atomic emission spectroscopy in analytical chemistry

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Enables identification and quantification of elements in a sample.