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 DeCS Categories

D01 Inorganic Chemicals .
D01.139 Bromine Compounds .
D01.139.300 Hydrobromic Acid .
D01.139.300.050 Bromides .
D01.142 Cadmium Compounds .
D01.142.175 Cadmium Chloride .
D01.210 Chlorine Compounds .
D01.210.450 Hydrochloric Acid .
D01.210.450.150 Chlorides .
D01.210.450.150.125 Cadmium Chloride .
D01.248 Electrolytes .
D01.248.497 Ions 5743 .
D01.248.497.158 Anions .
D01.248.497.158.125 Bromides .
D01.248.497.300 Cations .
D01.248.497.300.459 Cations, Monovalent .
D01.248.497.300.459.700 Protons .
D01.268 Elements .
D01.268.406 Hydrogen .
D01.268.406.750 Protons .
D01.362 Gases .
D01.362.340 Hydrogen .
D01.362.340.750 Protons .
D26 Pharmaceutical Preparations .
D26.776 Solutions .
D27 Chemical Actions and Uses .
D27.720 Specialty Uses of Chemicals .
D27.720.470 Laboratory Chemicals .
D27.720.470.280 Buffers .
E05 Investigative Techniques .
E05.196 Chemistry Techniques, Analytical .
E05.196.131 Calorimetry .
E05.196.300 Crystallization .
E05.196.922 Titrimetry .
E05.196.922.750 Potentiometry .
E05.301 Electrochemical Techniques .
E05.301.710 Potentiometry .
G01 Physical Phenomena .
G01.249 Elementary Particles .
G01.249.660 Nucleons .
G01.249.660.500 Protons .
G01.374 Mechanical Phenomena .
G01.374.715 Pressure .
G02 Chemical Phenomena .
G02.171 Crystallization .
G02.300 Hydrogen-Ion Concentration .
SP4 Environmental Health .
SP4.011 Science .
SP4.011.087 Contamination .
SP4.011.087.698 Physical Contamination .
SP4.011.087.698.389 Thermal Contamination .
SP4.011.087.698.389.060 Hot Temperature .
SP4.011.087.698.389.060.201 Calorimetry .
SP4.011.097 Chemistry .
SP4.011.097.042 Hydrogen-Ion Concentration .
 Synonyms & Historicals
Hydrogen-Ion Concentration .
Concentration, Hydrogen-Ion .
Concentrations, Hydrogen-Ion .
Hydrogen Ion Concentration .
Hydrogen-Ion Concentrations .
pH 5285 .
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) .
Buffers .
Ampholytes .
A chemical system that functions to control the levels of specific ions in solution. When the level of hydrogen ion in solution is controlled the system is called a pH buffer. .
Potentiometry .
Solution titration in which the end point is read from the electrode-potential variations with the concentrations of potential determining ions. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) .
Crystallization .
Crystal Growth .
Polymorphic Crystals .
Crystal, Polymorphic .
Crystalline Polymorph .
Crystallization Polymorphism .
Crystallization Polymorphisms .
Crystals, Polymorphic .
Growth, Crystal .
Polymorph, Crystalline .
Polymorphic Crystal .
Polymorphisms, Crystallization .
Polymorphs, Crystalline .
Crystalline Polymorphs .
Polymorphism, Crystallization .
The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) .
Bromides .
Salts of hydrobromic acid, HBr, with the bromine atom in the 1- oxidation state. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) .
Protons .
Hydrogen Ion .
Ion, Hydrogen .
Ions, Hydrogen .
Proton .
Hydrogen Ions .
Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion. .
Cadmium Chloride .
Cadmium Dichloride .
Chloride, Cadmium .
Dichloride, Cadmium .
CdCl2 .
A cadmium halide in the form of colorless crystals, soluble in water, methanol, and ethanol. It is used in photography, in dyeing, and calico printing, and as a solution to precipitate sulfides. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) .
Pressure .
Pressures .
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) .
Calorimetry .
The measurement of the quantity of heat involved in various processes, such as chemical reactions, changes of state, and formations of solutions, or in the determination of the heat capacities of substances. The fundamental unit of measurement is the joule or the calorie (4.184 joules). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) .
Solutions .
The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed) .