A. As the pan of the water is heated, the water molecules moves faster and father apart. As the water is heated, the water molecules gains more kinetic energy as the result of the heat that is been added by the stove. The gained kinetic energy allows the molecules to move faster and to move father away from one another. b. If there are more water inside the pan, the same phenomenon experienced in the [a] above will still occur, but this time around it will take a longer period for the reaction to occur. This is because, there are more water particles in the pan and therefore it will take longer time before the heat from the stove circulate round all the particles.
The reported mass will be too high because the initially recorded mass will include both water and impurities and the final mass will without both components. The difference will be larger so the amount of water reported would be higher.
