Chemistry
Articles about matter, substances, reactions and chemical science.
Cyanide
Cyanide: chemistry, occurrence, toxicity and applications
Cyclic compound
Cycloaddition
Cycloaddition: pericyclic ring-forming reactions in organic chemistry
Cycloalkane
Cyclohexane
Cyclohexene
Cyclooctane
Cyclooctane — properties, structure, and applications
Cyclopropane
Cyclopropane: structure, properties, history and uses
Cysteine
Cysteine — sulfur-containing α‑amino acid
D-block
D-block elements: the transition region of the periodic table
Darmstadtium
Darmstadtium (element 110)
DDT
DDT (dichlorodiphenyltrichloroethane): history, properties, and impacts
Decaffeination
Decaffeination: methods, history, and practical considerations
Delocalized electron
Depleted uranium
Depleted uranium: properties, uses, history and safety
Depolarizer
Deposition
Deprotonation
Deprotonation: removal of a proton in acid–base chemistry
Desiccation
Desiccation: drying, desiccants, effects and applications
Desublimation
Detergent
Detonation
Deuterium
Deuterium: Characteristics, Natural Occurrence, and Applications
Dew point
Diamond
Diamond (mineral, gem, and industrial material)
Diamond, a crystalline form of carbon, is noted for extreme hardness, high thermal conductivity and gem-quality varieties; it is used in jewelry, industrial tools and technical app
Diastase
Diastase: the amylase enzymes that break down starch
Diastereomer
Diastereomer: definition, properties, examples, and significance
Diatomic molecules
Dicalcium phosphate
Dieldrin
Dieldrin (organochlorine insecticide)
Diels–Alder reaction
Diene
Dietary mineral
Dietary mineral: essential inorganic nutrients in food
Diethyl ether
Diethyl ether (ether): properties, history, uses and safety
Differential scanning calorimeter
Differential Scanning Calorimeter (DSC): Principles, Types, and Applications
Diffusion
Diffusion: movement of particles from regions of high to low concentration
Dimethylmercury
Dimethylmercury — properties, hazards, uses and history
Dinitrogen pentoxide
Dinitrogen tetroxide
Dinitrogen tetroxide (N2O4)
Dioxin
Disaccharide
Disinfectant
Disinfectant: types, uses, history and safe handling
Disproportionation
Disproportionation (dismutation): a redox process producing two oxidation states
Distillation
Disulfur decafluoride
Disulfur decafluoride (S2F10)
Disulfur dichloride
Disulfur dichloride (S2Cl2)
Disulfur dinitride
Disulfur dinitride (S2N2): structure, properties and applications