The Wolfram Language provides seamless access to the curated and continuously updated Wolfram Knowledgebase—which includes a wide range of types of data for physics and chemistry. Free-form linguistics provide a convenient mechanism for accessing entities and data. The Wolfram Language also has built-in support for many common types of computations in physics and chemistry.

() — request data using free-form linguistics

Entity Operations »

EntityValue — general access to values of properties for all types of entities

Entity  ▪  EntityClass  ▪  EntityList  ▪  RandomEntity  ▪  EntityFunction  ▪  ...

Quantities & Units »

Quantity — symbolic representation of a quantity with units

Around — number or quantity with uncertainty

UnitConvert  ▪  UnitSimplify  ▪  UnitDimensions  ▪  ...

Physical Constants

PhysicalConstant — physical constants with their values, uncertainties, etc.

Properties of Matter

Element — chemical elements with atomic, chemical, bulk, etc. properties

Chemical — chemical compounds with structural, physical and other properties

Mineral — standard named minerals with properties

Food — foods and their chemical composition

EntityInstance — specify an amount of a substance, etc.

ThermodynamicData — detailed thermodynamic properties of common fluids

Molecular Structure »

Molecule — symbolic representation of molecules and their structure

Atom  ▪  Bond  ▪  StereochemistryElements  ▪  IncludeHydrogens  ▪  ...

MoleculePlot, MoleculePlot3D — render molecules with automatically computed structures

MoleculeValue — values of many computed properties of molecules

FindMoleculeSubstructure  ▪  MoleculePattern  ▪  MoleculeModify  ▪  ...

Crystallography

CrystalSystem CrystalFamily CrystallographicSpaceGroup  ▪  LatticeData

Atomic & Optical Physics

SpectralLineData — properties of atomic levels and transitions

PlanckRadiationLaw — properties of blackbody radiation

Laser — laser types

Nuclear & Particle Physics

Isotope — all known isotopes, with static and decay properties

Particle — known stable, unstable and resonance particles

ParticleAccelerator — major particle accelerators

StoppingPowerData — stopping power computation for ionizing radiation

Formulas & Models »

FormulaData — common formulas and equations used in physics and chemistry

PhysicalSystem — common physical systems, with equations and other properties

Simulations

NDSolve  ▪  NBodySimulation  ▪  CellularAutomaton

Experiments & Problems

MeasurementDevice FamousPhysicsProblem FamousChemistryProblem