Acup of water is filled to the brim when an ice cube is placed in it. the tip of the ice cube sticks out of the surface. as the ice melts, you observe that a cup of water is filled to the brim when an ice cube is placed in it. the tip of the ice cube sticks out of the surface. as the ice melts, you observe that the cup overflows. the water level remains the same. the water level actually goes down. the cup might overflow but it depends on the actual mass of the ice cube. there is not enough information to answer this question.