Question

Water solidifies into ice at 273 K. What happens to the K.E. of water molecules?​

Answer 1

• We know that, kinetic energy is temperature dependent. Increasing the temperature will excite the molecules, increasing their velocity.
• This increase in velocity results in the increase in kinetic energy.
• Whereas, decreasing the temperature tends to cease the molecular motion. Thus, lowering the kinetic energy.
• In the same way, when water solidifies into ice, the motion of water molecules gets restricted due to which its kinetic energy gets reduced.