If a drop of red food coloring is added to a glass of water, the red-colored molecules will
A) move from an area of high concentration of red-colored molecules to an area of low concentration.
B) move from an area of low concentration of red-colored molecules to an area of high concentration.
C) move from an area of high concentration of water molecules to an area of low concentration.
D) move toward an area of low concentration of water molecules.

Question

Quizplus · Accepted Answer

This process is called diffusion, where molecules move from an area of high concentration to an area of low concentration until equilibrium is reached. In this case, the red food coloring molecules would move from where they were added (high concentration) to other parts of the water (low concentration) until the color is evenly distributed throughout the water.

If a Drop of Red Food Coloring Is Added to a Glass