Interpretation: Changes happening when a solid is heated to its melting point are to be explained.
Concept introduction:
In solids, the particles are arranged in a coordinated manner. Solids' constituent particles can only move by vibrating about a fixed axis. As a result, solids have a fixed structure and are unable to flow like liquids.
Answer to Problem 51A
By heating to its melting point, intermolecular connections between the solid's particles are weakened.
Explanation of Solution
At the melting point, a liquid is now forming from the solid. Although the liquid's particles are identical to those in the solid, they are more energetic. Energy must be used to overcome the interactions between the particles in a solid to allow them to be pulled apart and melt the solid.
Chapter 13 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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