The conversion of heat to kinetic energy inside the water molecules causes the motion of the molecules to increase. The distance between molecules widens when the molecules move more quickly and clash more frequently. (As more heat is absorbed, the distance between molecules for solids, liquids, and gases widens)
It has a variable composition. B) Its color is different than pure gold. C) The gold atoms are not arranged in a repeating pattern. D) It can be melted and transformed into a different substance.