A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For questions about cleaning agents and methods used to remove dirt, stains, residues, and bad smells, including proper waste disposal. For particular questions about surfactants, use the [surfactants…
For questions about determining the paramagnetism, diamagnetism, etc. of chemical species and other chemical applications of magnetism. Note that questions oriented towards physical aspects of electro…
Questions relating to radioactive substances and the chemistry of radioactivity. Also, use [rare-earth-elements] if the question is about their radioactivity specifically.
should be applied to questions about the various allotropes of carbon and their physical or chemical properties. Most important modifications are diamond, graphite, fullerenes, graphene and n…
For questions about the concept of aromaticity. Do not use for reactions of aromatic compounds.
For questions relating to the synthesis of supramolecular, or colloidal structures and their properties or manufacturing processes of characterization for nano-featured structures.
For questions involving electricity in the scope of chemistry. Note that questions about electrical circuits, semi-conductor diodes, etc. are off topic and more suited for EE.SE or Phy.SE.
For questions about the atomic radius - a measure of the size of an atom, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding "cloud" of electrons.
macromolecular biological catalysts that alter the rate of a reaction. Use this tag for question regarding enzyme kinetics, classification and action.
Also known as cis/trans isomerism, configurational isomerism, or E/Z isomerism when referring to alkenes.
on E1, E2, E1cb, or any other type of elimination reaction.
For questions that deal with possible errors in a specific statement of a specified book, article, website, etc. These questions should always include a complete reference (see tag wiki for format).
For questions about conformational isomerism. Use this tag alongside [stereochemistry].
For questions about the process of distillation. For the distillation process used in metal refining, also use the [metallurgy] tag.
for questions about phenols, their synthesis, analysis, properties and more. Do not use the 'alcohols' tag for phenols due to the differences between the two classes.
for questions about amino acids, both natural and non-natural ones. It should only be applied to questions about the monomers. For peptides and proteins, use the proteins tag instead.
Questions about any process which makes water more acceptable for an end use.
For questions about the synthesis, properties, and reactions of organic compounds containing the -NO2 group i.e. nitro-compounds.
The systematic discussion of molecular symmetry is known as group theory. Group theory is a systematic way of describing the symmetry of molecules using concepts/rules borrowed from mathematics. This…
For questions regarding chemicals and chemical processes that act on and interact within environmental systems.
The adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface.
For questions regarding the chemical processes or chemicals involved in distinguishable smells
Questions discussing explosive nature of chemicals. Also, consider using the safety tag.
Chemical processes and theories being used in practical and experimental applications.
a type of angular momentum which is intrinsic to atomic and sub-atomic particles. Electrons in orbitals can be either spin paired or spin unpaired which influences the magnetic properties of t…
the process of design, synthesis, and testing of molecules (drugs) for the treatment of infection and disease. The medicinal-chemistry tag should be applied to all question…
For questions involving selectivity as to where a functional group reacts.
For questions about alloys.
Questions about compounds that lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid.
For questions relating to the electronic structure of inorganic complexes, particularly the splitting of degenerate $d$ or $f$ orbitals by the symmetry of the surrounding ligands.
Questions about elements of group 18 (group 0 in old notation) of the periodic table and their compounds, created despite the low reactivity of these elements.
For questions about the decomposition of any chemical species, under any certain conditions.
a method in computational chemistry that is used to study the movement of atoms and molecules.
For questions related to dissolving and subsequently precipitating as substance. The purpose may be for purifying, creating polymorphs, or other reasons.
Electromagnetic radiation (EM radiation, EMR, or light) is a form of energy released by electromagnetic processes. In physics, all EMR is referred to as light, but colloquially light often refers excl…
For questions about formal charge in any molecule. Do not confuse with [oxidation-state].