When ice is placed in warm water it melts. The order or structure of the molecules decreases. This is a natural process explained

by the second law of thermodynamics.

The second law of thermodynamics is also know as the law of

entropy

enthalpy

molecular theory

conservation of energy

What is the question you're asking

Since all energy transfers result in the loss of some usable energy, the second law of thermodynamics states that every energy transfer or transformation increases the entropy of the universe ... Essentially, living things are in a continuous uphill battle against this constant increase in universal entropy.