Final answer:
As you raise the temperature of water ice, it undergoes phase changes from solid to liquid to gas. However, water does not reach millions of degrees before turning into plasma.
Step-by-step explanation:
As you raise the temperature of a chunk of water ice to millions of degrees, several phases occur. The initial phase of the ice is solid, where the water molecules are tightly packed and do not move much. As the temperature increases, the ice melts and transitions into a liquid phase. In the liquid phase, the water molecules are more spread out and can move freely. Further heating causes the water to boil and transition into a gaseous phase, where the water molecules are widely separated and move rapidly. However, it is important to note that reaching millions of degrees is not possible for water, as it would turn into plasma well before that temperature is reached.