An emulsifier is a substance that consists of both polar and nonpolar groups and therefore is attracted to both phases of the emulsion. The polar groups are pulled toward the aqueous phase and the nonpolar groups are pulled toward the oil, or fat. The emulsifying agent is held at the interface of the two phases where it forms a monomolecular layer that coats the interface and impedes contact between the molecules of the dispersed phase. The droplets cannot touch each other and coalesce and remain suspended in the continuous phase. The emulsifying agent also reduces interface tension between the fat and water molecules, thus reducing their tendency to repel each other Solution An emulsifier is a substance that consists of both polar and nonpolar groups and therefore is attracted to both phases of the emulsion. The polar groups are pulled toward the aqueous phase and the nonpolar groups are pulled toward the oil, or fat. The emulsifying agent is held at the interface of the two phases where it forms a monomolecular layer that coats the interface and impedes contact between the molecules of the dispersed phase. The droplets cannot touch each other and coalesce and remain suspended in the continuous phase. The emulsifying agent also reduces interface tension between the fat and water molecules, thus reducing their tendency to repel each other.

1. An emulsifier is a substance that consists of both polar and nonpolar groups and
therefore is attracted to both phases of the emulsion. The polar groups are pulled toward the
aqueous phase and the nonpolar groups are pulled toward the oil, or fat. The emulsifying agent is
held at the interface of the two phases where it forms a monomolecular layer that coats the
interface and impedes contact between the molecules of the dispersed phase. The droplets cannot
touch each other and coalesce and remain suspended in the continuous phase. The emulsifying
agent also reduces interface tension between the fat and water molecules, thus reducing their
tendency to repel each other
Solution
An emulsifier is a substance that consists of both polar and nonpolar groups and
therefore is attracted to both phases of the emulsion. The polar groups are pulled toward the
aqueous phase and the nonpolar groups are pulled toward the oil, or fat. The emulsifying agent is
held at the interface of the two phases where it forms a monomolecular layer that coats the
interface and impedes contact between the molecules of the dispersed phase. The droplets cannot
touch each other and coalesce and remain suspended in the continuous phase. The emulsifying
agent also reduces interface tension between the fat and water molecules, thus reducing their
tendency to repel each other