---
layout: default
date: 2026-08-24
title: "Thermodynamics"
permalink: /physics/thermodynamics/
background_image: "/images/termodinamica.png"
description: "Explore thermodynamics through entropy, ideal gases, phase transitions, Gibbs free energy, equilibrium, colligative properties, and reaction energetics."
area: physics
topic: thermodynamics
---
# Thermodynamics
**Thermodynamics** studies energy transformations and the macroscopic behavior of physical systems.
Its central concepts — heat, work, temperature, entropy, equilibrium, and free energy — provide a framework for understanding processes ranging from the expansion of a gas to phase transitions and chemical reactions.
This section combines theoretical reasoning with worked problems on fundamental thermodynamic phenomena.
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## Ideal Gases and Thermodynamic Processes
Study the behavior of ideal gases through equations of state and thermodynamic transformations.
The worked problems connect pressure, volume, temperature, work, heat, and internal energy.
[**Explore Ideal Gas Processes →**](/physics/thermodynamics/ideal-gas-processes/)
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## Entropy and Adiabatic Processes
Entropy provides a fundamental way to describe the direction of thermodynamic processes and the constraints imposed by the second law.
Explore entropy changes and their relation to adiabatic transformations.
[**Explore Entropy and Adiabatic Processes →**](/physics/thermodynamics/entropy-adiabatic/)
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## Equilibrium and Spontaneity
Thermodynamic equilibrium describes states in which macroscopic properties remain stable, while thermodynamic potentials provide criteria for determining whether a process can occur spontaneously.
[**Explore Equilibrium and Spontaneity →**](/physics/thermodynamics/equilibrium-and-spontaneity/)
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## Gibbs Free Energy
Gibbs free energy combines enthalpy, temperature, and entropy into a thermodynamic potential particularly useful for studying processes at constant temperature and pressure.
[**Explore Gibbs Free Energy →**](/physics/thermodynamics/gibbs-free-energy/)
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## Phase Transitions
Phase transitions describe changes between different states of matter and provide a direct application of thermodynamic equilibrium, latent heat, entropy, and free energy.
[**Explore Phase Transitions →**](/physics/thermodynamics/phase-transitions/)
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## Colligative Properties and Freezing
Colligative properties depend on the number of dissolved particles rather than their chemical identity.
Explore freezing-point depression and its thermodynamic interpretation through worked problems.
[**Explore Colligative Properties →**](/physics/thermodynamics/colligative-freezing/)
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## Reaction Energetics
Thermodynamics provides the tools required to analyze energy changes associated with physical and chemical transformations.
Enthalpy, entropy, and free-energy changes connect microscopic transformations with macroscopic criteria for equilibrium and spontaneity.
[**Explore Reaction Energetics →**](/physics/thermodynamics/reaction-energetics/)
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