Page 13 - Chemistry dictionary by Futura-Sciences

Alphabetical index

Polysaccharide The polysaccharides, or polyosides, are complex sugars from ...	Polystyrene Polystyrene (PS) is a polymer of which the monomer (the ...
Porosity A porosity is an open or closed micro-cavity, due to the ...	Porphyrin Porphyrins are molecules with cyclic structures which, when ...
Position isomerism Molecules differing by the position of an atom or group, ...	Post-combustion CO2 separation The separation of postcombustion CO2 is a technique to ...
Principle quantum number The principle quantum number n (or m) is an integer used in ...	Pyrolysis Pyrolysis is a chemical reaction in which an organic ...
Pyrophosphate bond A pyrophosphate bond is a high potential energy bond between ...	Quantum number Quantum numbers are numbers involved in quantum mechanics to ...
Quicklime Quicklime is a white powder composed mainly of calcium ...	Radical A radical is a molecular species with one or more unpaired ...
Radioactivity Radioactivity is the property of certain atomic nuclei of ...	Radon Radon is a radioactive gas produced in a natural nuclear ...
Rare earth minerals A set of 15 rare elements (such as lanthanum, neodymium, ...	Rate determining step The rate determining step is the slowest step in a chemical ...
Rate-limiting enzyme A rate-limiting enzyme is a key enzyme of which the activity ...	Reagent Chemistry A reagent is a substance introduced to take part ...
Redox In a redox reaction one molecule is oxidised (it is a ...	Reduced substance A reduced substance is a molecule that has received one or ...