Chemistry A-Level
absorption spectrum
What absorption spectrum means in Chemistry A-Level, as defined for AQA.
Definition of absorption spectrum
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Reference: AQA
A plot of absorbance against wavelength, produced by passing light of each wavelength in turn through a sample and recording how much is absorbed.
Topics that use absorption spectrum
- Formation of coloured ions (A-level only) (AQA A-Level)
Related terms
- absorption of visible light
- calibration curve
- colour changes on adding reagents
- complementary colour
- filter selection
- ground state and excited state
- size of the d orbital gap
- standard solutions
Using absorption spectrum in the exam
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