Ice is an example of another state change- when solid ice becomes liquid water explain what you think happened to the water molecules during this state change?
During the state change from solid ice to liquid water, the water molecules undergo a rearrangement of their structure. In solid ice, the water molecules are held together in a rigid lattice structure due to the hydrogen bonding between them.
When external energy, such as heat, is added to the ice, it increases the kinetic energy of the water molecules. As the kinetic energy increases, the hydrogen bonds between the water molecules start to break down. The increased energy causes the water molecules to vibrate more rapidly and break free from the rigid lattice structure of ice.
As more heat is added, the movement of the water molecules becomes even more vigorous, and eventually, the intermolecular forces are sufficiently weakened to overcome the regular lattice arrangement. This results in the water molecules becoming more mobile, allowing them to flow and slide past each other. At this point, the ice has melted, and the water molecules have transitioned into the liquid state.
During this state change, the individual water molecules do not break apart or undergo any chemical reactions. Instead, they only experience a change in their arrangement and mobility. Once the energy source is removed and the system cools down, the water molecules may bond with each other again, forming solid ice.