I am interested in knowing whether what changes would happen at the molecular and atomic level, to a material subjected to Cooling. 1. Does the minimum temperature that can be achieved has limit? 2. Is it Zero Kelvin? 3. If so, is it a global standard for minimum temperature for any material? 4. When a material is cooled, what will be the effect on vibrational and rotational motion of the electrons inside the atom and what will happen to the inter-molecular bonds between molecules? Thank You !