Energetics of Phase Changes | Heat of Fusion and Vaporization | Lecture 8 | Chapter 5 | Fsc 1st Year

In this lecture "Energetics of Phase Changes" from Chapter 5 – States of Matter (FSc 1st Year Chemistry), we explore the energy changes involved in phase transitions such as melting, freezing, vaporization, condensation, sublimation, and deposition.
You will learn about:

Enthalpy of fusion, enthalpy of vaporization, and enthalpy of sublimation

How energy is absorbed or released during phase changes

Heating and cooling curves explained step-by-step

The role of intermolecular forces in phase transitions

Why temperature remains constant during a phase change

Real-life applications of phase change energetics in chemistry and daily life


This lecture is prepared according to PECTAA syllabus and is perfect for FSc Pre-Medical and FSc Pre-Engineering students, competitive exam aspirants, and anyone who wants to understand thermodynamics of states of matter.

📚 Chapter: 5 – States of Matter
🎯 Lecture: 8 – Energetics of Phase Changes
🏫 Class: FSc 1st Year Chemistry
👨‍🏫 By: Zeeshan Haider – Chemistry Lover

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