[{"n": "Absorption spectroscopy", "u": "/e/chemistry-fundamentals/absorption-spectroscopy/", "s": "Technique measuring radiation absorption to identify and quantify substances."}, {"n": "Accuracy and precision", "u": "/e/chemistry-fundamentals/accuracy-and-precision/", "s": "Measures of observational error: accuracy vs. precision."}, {"n": "Acetic acid", "u": "/e/chemistry-fundamentals/acetic-acid/", "s": "The second simplest carboxylic acid, key to vinegar and industrial chemistry."}, {"n": "Acetone", "u": "/e/chemistry-fundamentals/acetone/", "s": "Simplest ketone, key solvent and industrial precursor."}, {"n": "Acid", "u": "/e/chemistry-fundamentals/acid/", "s": "A substance that donates a proton or accepts an electron pair."}, {"n": "Acid–base reaction", "u": "/e/chemistry-fundamentals/acid-base-reaction/", "s": "A chemical reaction between an acid and a base."}, {"n": "Alcohol (chemistry)", "u": "/e/chemistry-fundamentals/alcohol-chemistry/", "s": "Organic compounds with a hydroxyl group on a saturated carbon atom."}, {"n": "Aldehyde", "u": "/e/chemistry-fundamentals/aldehyde/", "s": "An organic compound with a formyl group (R−CHO), featuring a polar carbonyl and diverse reactivity."}, {"n": "Alkane", "u": "/e/chemistry-fundamentals/alkane/", "s": "Acyclic saturated hydrocarbons forming a homologous series."}, {"n": "Alkene", "u": "/e/chemistry-fundamentals/alkene/", "s": "Alkenes: acyclic hydrocarbons with one double bond, part of the broader olefin class."}, {"n": "Alkyne", "u": "/e/chemistry-fundamentals/alkyne/", "s": "Unsaturated hydrocarbons with at least one carbon–carbon triple bond."}, {"n": "Allotropy", "u": "/e/chemistry-fundamentals/allotropy/", "s": "Property of elements to exist in multiple structural forms."}, {"n": "Amide", "u": "/e/chemistry-fundamentals/amide/", "s": "Amides are organic compounds linking amino acids into proteins."}, {"n": "Amine", "u": "/e/chemistry-fundamentals/amine/", "s": "Organic compounds with carbon–nitrogen bonds derived from ammonia."}, {"n": "Ammonia", "u": "/e/chemistry-fundamentals/ammonia/", "s": "A colourless gas with a pungent smell, vital for fertilizers."}, {"n": "Aromatic compound", "u": "/e/chemistry-fundamentals/aromatic-compound/", "s": "Cyclic conjugated compounds defined by Hückel's rule."}, {"n": "Base (chemistry)", "u": "/e/chemistry-fundamentals/base-chemistry/", "s": "Substances that react with acids, accepting protons or donating electron pairs."}, {"n": "Benzene", "u": "/e/chemistry-fundamentals/benzene/", "s": "A foundational aromatic hydrocarbon with industrial and health significance."}, {"n": "Carboxylic acid", "u": "/e/chemistry-fundamentals/carboxylic-acid/", "s": "Polar organic acids with carboxyl group, widely occurring in nature."}, {"n": "Chemical bond", "u": "/e/chemistry-fundamentals/chemical-bond/", "s": "The association of atoms or ions via electrostatic forces, electron sharing, or a combination, forming molecul"}, {"n": "Chemical compound", "u": "/e/chemistry-fundamentals/chemical-compound/", "s": "Substance of multiple elements bonded in fixed proportions."}, {"n": "Chemical element", "u": "/e/chemistry-fundamentals/chemical-element/", "s": "Fundamental species of atom defined by proton count."}, {"n": "Chemical equation", "u": "/e/chemistry-fundamentals/chemical-equation/", "s": "Symbolic representation of a chemical reaction using formulas and an arrow."}, {"n": "Chemical equilibrium", "u": "/e/chemistry-fundamentals/chemical-equilibrium/", "s": "State where forward and reverse reaction rates are equal."}, {"n": "Chemical formula", "u": "/e/chemistry-fundamentals/chemical-formula/", "s": "A notation showing atomic proportions in a compound."}, {"n": "Chemical kinetics", "u": "/e/chemistry-fundamentals/chemical-kinetics/", "s": "The branch of physical chemistry concerned with understanding the rates of chemical reactions."}, {"n": "Chemical reaction", "u": "/e/chemistry-fundamentals/chemical-reaction/", "s": "Process rearranging atoms with energy change, yielding new substances."}, {"n": "Chemical synthesis", "u": "/e/chemistry-fundamentals/chemical-synthesis/", "s": "Artificial execution of chemical reactions to obtain products."}]