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. Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Atomic molecular, and optical Physics is the study of Matter -matter and Light -matter interactions on the scale of single Condensed matter physics is the field of Physics that deals with the macroscopic physical properties of Matter. 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. Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Chemistry (from Egyptian kēme (chem meaning "earth") is the Science concerned with the composition structure and properties Physical chemistry, is the application of Physics to macroscopic microscopic atomic subatomic and particulate phenomena in chemical systems It is mostly defined as a large Meanwhile, physical chemistry studies the physical nature of chemistry. Nonetheless, the distinction between the two fields is vague, and workers often practice in each field during the course of their research.

Chemical physicists commonly probe the structure and dynamics of ions, free radicals, polymers, clusters, and molecules. In physics the term dynamics customarily refers to the time evolution of physical processes An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge In Chemistry, radicals (often referred to as free radicals) are atoms molecules or ions with Unpaired electrons on an otherwise Open shell A polymer is a large Molecule ( Macromolecule) composed of repeating Structural units typically connected by Covalent Chemical bonds In Chemistry, a cluster is an ensemble of bound Atoms intermediate in size between a Molecule and a bulk Solid. In Chemistry, a molecule is defined as a sufficiently stable electrically neutral group of at least two Atoms in a definite arrangement held together by 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. Quantum mechanics is the study of mechanical systems whose dimensions are close to the Atomic scale such as Molecules Atoms Electrons A chemical reaction is a process that always results in the interconversion of Chemical substances The substance or substances initially involved in a chemical reaction are called Solvation, commonly called dissolution, is the process of attraction and association of Molecules of a Solvent with molecules or Ions of a A quantum dot is a Semiconductor whose Excitons are confined in all three Spatial dimensions. 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. Spectroscopy was originally the study of the interaction between Radiation and Matter as a function of Wavelength (λ A hydrogen bond results from a Dipole-dipole force between an Electronegative atom and a Hydrogen atom bonded to Nitrogen, Oxygen Electron transfer (ET is the process by which an Electron moves from one Atom or Molecule to another atom or molecule A chemical bond is the physical process responsible for the attractive interactions between Atoms and Molecules and which confers stability to diatomic and polyatomic In Nanotechnology, a particle is defined as a small object that behaves as a whole unit in terms of its transport and properties 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. This page is about the physical properties of gas as a state of matter In Thermodynamics, phase transition or phase change is the transformation of a thermodynamic system from one phase to another 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?
• 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?
• 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?

Related fields

• Physical chemistry
• Molecular dynamics
• Quantum chemistry
• Solid state physics
• Spectroscopy
• Intermolecular forces
• Surface chemistry
• Van der Waals complexes

A fractal is generally "a rough or fragmented geometric shape that can be split into parts each of which is (at least approximately a reduced-size copy of the whole" In Physics, the photon is the Elementary particle responsible for electromagnetic phenomena Light, or visible light, is Electromagnetic radiation of a Wavelength that is visible to the Human eye (about 400–700 Photodissociation, photolysis, or photodecomposition is a Chemical reaction in which a Chemical compound is broken down by Photons X-radiation (composed of X-rays) is a form of Electromagnetic radiation. The electron is a fundamental Subatomic particle that was identified and assigned the negative charge in 1897 by J History See also Atomic theory, Atomism The concept that matter is composed of discrete units and cannot be divided into arbitrarily tiny Xenon (ˈzɛnɒn or) is a Chemical element represented by the symbol Xe. Physical chemistry, is the application of Physics to macroscopic microscopic atomic subatomic and particulate phenomena in chemical systems It is mostly defined as a large Molecular dynamics ( MD) is a form of Computer simulation in which atoms and molecules are allowed to interact for a period of time by approximations of Quantum chemistry is a branch of Theoretical chemistry, which applies Quantum mechanics and Quantum field theory to address issues and problems in Solid-state physics, the largest branch of Condensed matter physics, is the study of rigid Matter, or Solids The bulk of solid-state physics theory and Spectroscopy was originally the study of the interaction between Radiation and Matter as a function of Wavelength (λ In Physics, Chemistry, and Biology, intermolecular forces are forces that act between stable Molecules or between functional groups of Surface science is the study of physical and chemical phenomena that occur at the interface of two phases, including Solid - Liquid

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