Transfer of heat from ice to water in a beaker

How does the transfer of heat takes place from ice below 0 degree celcius to water at room temperature? Does it take place by conduction? Does temperature of water rises uniformly throughout or it first increases near the surface of ice?

When some ice at 0 degree celcius kept in a beaker is heated, does the temperature of water formed by melting of ice increases simultaneously with melting of ice or temperature of water remains constant till all the ice is melt? Also Give logic behind your explanation

• If you want heat to flow from a cold object to a warmer object, this can only happen if the pressure is decreases dramatically or similar. Mar 12, 2016 at 8:32
• It cannot be answered if the heat transfer is by conduction, before the system is known. Can you describe and make a sketch of the setup? Are we talking ice in a water bath, or ice alone melting or ice on the table and water in a bowl beside it? Mar 12, 2016 at 8:34
• @Steeven discuss both the cases. First part of my question deals with the case of ice kept in water bath and next part deals with melting of ice alone. Mar 12, 2016 at 9:49