-
937.
Pyrolysis
Subjects
Chemical reactions
-
938.
Pyroxene
Subjects
-
939.
Pyrroles
Subjects
Heterocyclic compounds
-
940.
QSPR (Quantitative Structure-Property Relationships)
Subjects
-
941.
Qualitative chemical analysis
Subjects
Analytical chemistry
-
942.
Quantum chemistry
Subjects
Physical and theoretical chemistryQuantum theory
-
943.
Quinine
Subjects
AnalgesicsAntimalarialsMuscle relaxants
-
944.
Quinoxalines
Subjects
Heterocyclic compounds
-
945.
Radicals (Chemistry)
Subjects
Organic chemistry
-
946.
Radiochemical analysis
Subjects
Analytical chemistryRadiochemistry
-
947.
Radiochemistry
Subjects
Physical and theoretical chemistryRadioactivity
-
948.
Radioisotopes
Subjects
Nuclear engineeringIsotopesRadioactive substances
-
949.
Radioisotopes in biology
Subjects
Isotope geology
-
950.
Radioisotopes in geology
Subjects
Isotope geology
-
951.
Radioisotopes in pharmacology
Subjects
PharmacologyNuclear medicine
-
952.
Radium
Subjects
Alkaline earth metalsRadiationRadioactive substances
-
953.
Radon
Subjects
-
954.
Raman spectroscopy
Subjects
Spectrum analysisRaman effect
-
955.
Rape oil
Subjects
Vegetable oils
-
956.
Rare earth metals
Subjects
Nonferrous metals
-
957.
Rare earths
Subjects
MineralsOxides
-
958.
Rare gases
Subjects
Nonmetals
-
959.
Reaction mechanisms (Chemistry)
Subjects
Conditions and laws of chemical reaction
-
960.
Reactivity (Chemistry)
Subjects
Reaction mechanisms (Chemistry)
Last updated dated: 18/10/2025