Hello again... 1. Some claim that the freezer makes ice faster if one pours boiling water instead of cold water on the ice trays. Is this true? How come? 2. If one intend to drink a coffee soon, he has to stir it with teaspoon. How does that help? 3. How does a thermos bottle keep the water inside hot for a longer period? First of all, what is all about the structure of the thermos bottle? 4. Would there be a faster or slower rate of fall in temperature of a hot substance placed in vacuum at lower temperature? Why or why not?