Question

A hot block of iron is placed on top of a block of ice at Tiwater--60° C in an insulating container so no heat can be transferred into or out of the container. When you open the container later the ice has completely melted. For the physical system of the iron and water, what energy systems changed from the time the iron is placed insided to the time the container is opened? Ebond, water O Ethermal, iron, Ethermal, water Ethermal l bond, iron iron Etherma I, water Ebond, water E Ethermal, iron, Ethermal, water, Ebond, water

Answer 1

option (D) E_{thermal, iron.} E_{thermal, water.} E_{bond, water.}

These energies are changed because when hot iron bar is placed, it will lose some heat and ice will gain the same energy and ice will melt. therefore bond energy of water is also changed.