Question

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases what happens?

Answer 1

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases;

1. Its temperature increases
2. The space between particles increases
3. The particles move faster

Explanation:

As heat energy is applied to a substance, its temperature increases. The molecules of the gain more kinetic energy and the bombardment between the molecules increase with frequency and energy. The distance between the molecules also increases and this is attributed to the expansion of substances when heated. This continues until temperatures are reached where the kinetic energy of the molecules is high enough to overcome the intermolecular forces between the molecules and the substance changes phase.

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