It attempts to describe and account for the properties of molecules and atoms and their constituents—electrons, protons, neutrons, and other more esoteric particles such as quarks and gluons.

Quantum mechanics is the branch of physics that deals with the behavior of matter and light on a subatomic and atomic level. Philosophical Issues in Quantum Theory First published Mon Jul 25, 2016 This article is an overview of the philosophical issues raised by quantum theory, intended as a pointer to the more in-depth treatments of other entries in the Stanford Encyclopedia of Philosophy. It attempts to explain the properties of atoms and molecules and their fundamental particles like protons, neutrons, electrons, gluons, and quarks. Quantum mechanics is an important tool to understand at the theoretical level the electronic structure of chemical compounds and the mechanism, thermodynamics, and kinetics of chemical reactions.

Quantum mechanics has been very successful in describing particle interactions. It also provides reactivity parameters to understand a reaction process and helps in the characterization of chemical reactions.

We use this idea in statistical mechanics. However, some aspects of quantum mechanics have physical and mathematical explanations that defy common sense and therefore become difficult to comprehend and visualize. Statistical mechanics deals with systems with large number of particles. A quantum of energy is the least amount possible (or the least extra amount), and quantum mechanics describes how that energy moves or interacts.

This has strengthened confidence in its foundations as representing natural phenomena, at least at the microscopic level. The Ensemble Interpretation, or Statistical Interpretation of Quantum Mechanics is an interpretation that can be viewed as a minimalist interpretation. Also, we introduced the grand canonical ensemble in sections 5.3 and 5.4 to calculate the partition function for the perfect quantum gases. A discussion of aspects of probability relevant to the differing interpretations of quantum theory is given, followed by an account of so-called orthodox interpretations of quantum theory that stresses their flexibility and subtlety as well as their problems. This different comprehension of ensembles in statistical mechanics and quantum mechanics causes many of the misunderstanding. statistical ensemble. That is, it is a quantum mechanical interpretation, that claims to make the fewest assumptions associated with the standard mathematical formalization.

It is also called quantum physics or quantum theory.Mechanics is the part of physics that explains how things move and quantum is the Latin word for 'how much' .