A conjugated system refers to a series of connected p-orbitals with delocalized electrons across adjacent single and multiple bonds. This arrangement allows for increased stability and unique chemical properties, often seen in organic compounds like benzene and butadiene. The overlapping p-orbitals enable the electrons to move freely, contributing to the system's reactivity and color. In conjugated systems, the alternating single and double bonds create a pattern that enhances the molecule's ability to absorb light, leading to various applications in dyes and pigments. The presence of conjugation can also influence the physical properties, such as melting and boiling points, making these systems significant in organic chemistry.