Melting is the process of changing something from a solid into a liquid (like metal into liquid metal). It is the opposite of freezing. The temperature at which something begins to melt is called its melting point. When an object is heated, the object's particles begin to move faster and faster until the structured particles are freed. Now it is a liquid. It is a solid that is turning into a liquid. Ice takes longer to melt it is in cold water, because the water is near the melting point. It melts more quickly in warm water, far from the melting point.