Encyclopedia for analytics, chemistry, lab technology, chemical engineering, process engineering

My watch list

ENCYCLOPEDIA

Search Encyclopedia

chemeurope.com's Encyclopedia of Chemistry provides articles for 64,557 entries from chemistry, pharmaceutics and material sciences as well as related scientific disciplines.

Definitions

History of saffron fresco from the excavation of Akrotiri on the Aegean island of Santorini . The history of saffron in human cultivation and use reaches back more than 3,000 years. and spans many cultures, continents, and civilizations. Saffron , a spice derived from the dried stigmas of t more

Antioxidant

Antioxidant glutathione . The yellow sphere is the redox-active sulfur atom that provides antioxidant activity, while the red, blue, white, and dark grey spheres represent oxygen, nitrogen, hydrogen, and carbon atoms, respectively. An antioxidant is a molecule capable of slowing or preventing th more

Xenon

Xenon Xenon ( in the UK, in the US) is a chemical element that has the symbol Xe and atomic number 54. A colorless, heavy, odorless noble gas , xenon occurs in the earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reaction s such as the forma more

Enzyme kinetics

Enzyme kinetics from E. coli with its two substrates, dihydrofolate (right) and NADPH (left), bound in the active site. The protein is shown as a ribbon diagram , with alpha helices in red, beta sheets in yellow and loops in blue. Generated from 7DFR . Enzyme kinetics is the study of the chemic more

Technetium

Technetium |- | Electron affinity || -53 kJ/mol Technetium () is the lightest chemical element with no stable isotope . It has atomic number 43 and is given the symbol Tc. The chemical properties of this silvery grey, crystalline transition metal are inte more

Chemical elements