Chapter 12, Problem 12.85QP

Interpretation Introduction

Interpretation:

The phase changes that occur in following phenomenon have to be explained.

“A length of wire is placed on top of a block of ice.  The ends of the wire extend over the edges of the ice, and a heavy weight is attached to each end. It is found that the ice under the wire gradually melts, so the wire slowly moves through the ice block.  At the same time, the water above the wire refreezes.”

Concept Introduction:

• A phase change means the change in the physical state of substance – from one physical state to another physical state.
• The possible phase changes occur among vapor, solid and liquid phases of a substance are – melting, freezing, evaporation (or vaporization), condensation, deposition and sublimation.