List the different phase transitions that are possible and give examples of each.

Name: Problem 1, Chapter 11: General Chemistry
Uploaded: 2021-06-19T00:12:55-08:00
Duration: 4 min 12 s
Channel: Natalie Johns
Description: List the different phase transitions that are possible and give examples of each.

List the different phase transitions that are possible and...

Key Concepts

Quantum Phase Transitions

Quantum phase transitions occur at absolute zero temperature when a change in a non-thermal control parameter, like magnetic field or pressure, drives the system between different quantum ground states. At these transitions, quantum fluctuations, rather than thermal ones, are the dominant factor, often leading to novel and complex critical behaviors.

Topological Phase Transitions

Topological phase transitions involve changes in the global properties of a system’s state that are characterized by topological order, rather than by local symmetry breaking. These transitions often occur in lower-dimensional systems and include phenomena such as the unbinding of topological defects, which can result in unique critical behaviors.

Continuous (Second-Order) Phase Transitions

Continuous or second-order phase transitions occur without latent heat and are marked by a continuous change in the order parameter. In these transitions, the first derivatives of the free energy are continuous, but the second derivatives exhibit singularities, leading to critical phenomena such as diverging correlation lengths and susceptibilities.

First-Order Phase Transitions

First-order phase transitions are characterized by discontinuities in the first derivative of the free energy with respect to an external variable, such as temperature or pressure. They usually involve the absorption or release of latent heat, and the coexistence of phases during the transition process, which can lead to phenomena like hysteresis.

Phase Transitions

Phase transitions refer to the transformation of a system from one phase or state of matter to another when subjected to changes in external conditions such as temperature, pressure, or magnetic field. These transitions typically involve changes in energy, symmetry, and order parameters that define the phases of the system.

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