Chemical physics

Chemical physics is a subdiscipline of chemistry and physics that investigates physicochemical phenomena using techniques from atomic and molecular physics and condensed matter physics; it is the branch of physics that studies chemical processes from the point of view of physics. While at the interface of physics and chemistry, chemical physics is distinct from physical chemistry in that it focuses more on the characteristic elements and theories of physics. Meanwhile, physical chemistry studies the physical nature of chemistry. Nonetheless, the distinction between the two fields is vague, and workers often practice in both fields during the course of their research.^[1]

The United States Department of Education defines chemical physics as "A program that focuses on the scientific study of structural phenomena combining the disciplines of physical chemistry and atomic/molecular physics. Includes instruction in heterogeneous structures, alignment and surface phenomena, quantum theory, mathematical physics, statistical and classical mechanics, chemical kinetics, and laser physics."^[2]

What chemical physicists do

Chemical physicists commonly probe the structure and dynamics of ions, free radicals, polymers, clusters, and molecules. Areas of study include the quantum mechanical behavior of chemical reactions, the process of solvation, inter- and intra-molecular energy flow, and single entities such as quantum dots. Experimental chemical physicists use a variety of spectroscopic techniques to better understand hydrogen bonding, electron transfer, the formation and dissolution of chemical bonds, chemical reactions, and the formation of nanoparticles. Theoretical chemical physicists create simulations of the molecular processes probed in these experiments to both explain results and guide future investigations. The goals of chemical physics research include understanding chemical structures and reactions at the quantum mechanical level, elucidating the structure and reactivity of gas phase ions and radicals, and discovering accurate approximations to make the physics of chemical phenomena computationally accessible. Chemical physicists are looking for answers to such questions as:

Can we experimentally test quantum mechanical predictions of the vibrations and rotations of simple molecules? Or even those of complex molecules (such as proteins)?
Can we develop more accurate methods for calculating the electronic structure and properties of molecules?
Can we understand chemical reactions from first principles?
Why do quantum dots start blinking (in a pattern suggesting fractal kinetics) after absorbing photons of light?
How do chemical reactions really take place?
What is the step-by-step process that occurs when an isolated molecule becomes solvated? Or when a whole ensemble of molecules becomes solvated?
Can we use the properties of negative ions to determine molecular structures, understand the dynamics of chemical reactions, or explain photodissociation?
Why does a stream of soft x-rays knock enough electrons out of the atoms in a xenon cluster to cause the cluster to explode?

Journals

References

↑ Slater, J.C. (1939). Introduction to Chemical Physics.
↑ Detail for CIP Code 40.0508

Branches of chemistry

Dictionary of chemical formulas List of biomolecules List of inorganic compounds Periodic table

Physical	Chemical kinetics Chemical physics Nuclear chemistry Electrochemistry Femtochemistry Geochemistry Photochemistry Quantum chemistry Solid-state chemistry Spectroscopy Surface science Thermochemistry

Organic	Biochemistry Bioorganic chemistry Biophysical chemistry Chemical biology Clinical chemistry Fullerene chemistry Medicinal chemistry Neurochemistry Organic chemistry Pharmacy Physical organic chemistry Polymer chemistry

Inorganic	Bioinorganic chemistry Cluster chemistry Coordination chemistry Inorganic chemistry Materials science Organometallic chemistry

Others	Actinide chemistry Analytical chemistry Astrochemistry Chemistry education Clay chemistry Click chemistry Computational chemistry Cosmochemistry Environmental chemistry Food chemistry Forensic chemistry Green chemistry Post-mortem chemistry Supramolecular chemistry Theoretical chemistry Wet chemistry

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Branches of physics

Divisions	Applied Experimental Theoretical

Energy Motion	Thermodynamics Mechanics Classical Ballistics Lagrangian Hamiltonian Continuum Celestial Statistical Solid Fluid Quantum

Waves Fields	Gravitation Electromagnetism Optics Geometrical Physical Nonlinear Quantum Quantum field theory Relativity Special General

By speciality	Accelerator Acoustics Astrophysics Nuclear Stellar Heliophysics Solar Space Astroparticle Atomic–molecular–optical (AMO) Communication Computational Condensed matter Mesoscopic Solid-state Soft Digital Engineering Material Mathematical Molecular Nuclear Particle Phenomenology Plasma Polymer Statistical

Physics in life science	Biophysics Virophysics Biomechanics Medical physics Cardiophysics Health physics Laser medicine Medical imaging‎ Nuclear medicine Neurophysics Psychophysics

Physics with other sciences	Agrophysics Soil Atmospheric Cloud Chemical Econophysics Geophysics

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Chemical physics

What chemical physicists do

Journals

See also

References