Problem: You have a round pie plate ?lled with water. You carefully release a drop of red food coloring In the center of the plate. What happens to the red dye molchles right after the drop is placed? ' Dye molecules move in all directions and since most directions take them away from the drop, they spread out' If ' There are more total molecules concentrated within the drop compared to outside the drop, so they bounce off each other more in the drop and spread out. N Dye molecules are repelled by the other dye molecules in the drop and the repulsion causes them to spread out.