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GCSE Chemistry · key term
A measure of the strength of detected radiation, usually shown on the vertical axis of a spectrum.
Used by Edexcel and OCR
Paper 2
Revise: Mathematical ApplicationsThe positions of its lines can help identify the substance, whereas their intensities can provide information about how much of the substance is present. These features must not be confused.
Specification CM4.2i · Paper 2 (Foundation), Paper 4 (Higher)
The brightness of light measured at a particular wavelength.
Revise: Spectroscopy ChartsOn a graph, wavelength is usually on the horizontal axis and light intensity on the vertical axis.
When comparing intensities, make sure the spectra use the same scale and measurement conditions.
Support every conclusion with chart evidence, such as matching wavelengths or a greater measured intensity.
Only read a concentration from a calibration graph when its axes and the relevant measured intensity are given.
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