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Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The study of molecules by molecular physics and theoretical chemistry is largely based on quantum mechanics and is essential for the understanding of the chemical bond. The simplest of molecules is the hydrogen molecule-ion, H 2 +, and the simplest of all the chemical bonds is the one-electron bond.
3' untranslated region (3'-UTR). Also three-prime untranslated region, 3' non-translated region (3'-NTR), and trailer sequence.. 3'-end. Also three-prime end.. One of two ends of a single linear strand of DNA or RNA, specifically the end at which the chain of nucleotides terminates at the third carbon atom in the furanose ring of deoxyribose or ribose (i.e. the terminus at which the 3' carbon ...
Synonyms CAS number CAgO carbonylsilver: CCl 2 F 2: dichlorodifluoromethane freon-12: 75-71-8 CCl 4: carbon tetrachloride tetrachloromethane: 56-23-5 C(CN) 4: tetracyanomethane: 24331-09-7 CFCl 3: trichlorofluoromethane freon-11: 75-69-4 CFCl 2 CF 2 Cl: chlorotrifluoromethane freon-13: 75-72-9 CHCl 3: chloroform trichloromethane methyl ...
Synonyms CAS number; C 5 BrMnO 5: manganese pentacarbonyl bromide: 14516-54-2 C 5 BrO 5 Re: rhenium pentacarbonyl bromide: 14220-21-4 C 5 Cl 2 F 6 O 2: hexafluoroglutaryl chloride: 678-77-3 C 5 F 6 O 3: hexafluoroglutaric acid anhydride: 376-68-1 C 5 F 8 O 2: hexafluoroglutaryl fluoride: 678-78-4 C 5 F 10: decafluorocyclopentane: 376-77-2 C 5 F ...
The word 'alchemy' itself derives from the Arabic word al-kīmiyāʾ (الكيمياء), wherein al-is the definite article 'the'. The ultimate origin of the word is uncertain, [1] but the Arabic term kīmiyāʾ (كيمياء) is likely derived from either the Ancient Greek word khēmeia (χημεία) or the similar khēmia (χημία). [2] [3]
The single-stranded nature of protein molecules, together with their composition of 20 or more different amino acid building blocks, allows them to fold in to a vast number of different three-dimensional shapes, while providing binding pockets through which they can specifically interact with all manner of molecules.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.