Absorption Spectra Organic compound exposed to electromagnetic radiation, can absorb energy of only certain wavelengths(unit of energy) Transmits, energy of other wavelengths Changing wavelengths to determine which are absorbed and which are transmitted produces an absorption spectrum Energy absorbed is distributed internally in a distinct and reproducible way(See Figure 12-1Absorption Spectra • Organic compound exposed to electromagnetic radiation, can absorb energy of only certain wavelengths (unit of energy) – Transmits, energy of other wavelengths. • Changing wavelengths to determine which are absorbed and which are transmitted produces an absorption spectrum • Energy absorbed is distributed internally in a distinct and reproducible way (See Figure 12-11)