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Analytical Chemistry Spectroscopy Spectroscopy: this term covers the whole area of quantitative and qualitative analysis using energy absorbed or emitted as the measure. Emission: this occurs when excited electrons return to their ground states and radiate energy of fixed wavelengths. Emission spectra have sets of coloured lines on a black background. Absorption: molecules can absorb energy of certain wavelengths. In the visible and ultra-regions of the electromagnetic spectrum, electrons surrounding the atoms in the molecules may gain energy. If no energy is absorbed the substance appears to be white. If the substance is coloured then it has absorbed complementary to that seen.
Approximate Word count = 406 Approximate Pages = 1.6 (250 words per page double spaced)
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