-
937.
Pyrites
Subjects
-
938.
Pyroelectricity
Subjects
CrystallographyElectricity
-
939.
Pyrolysis
Subjects
Chemical reactions
-
940.
Pyroxene
Subjects
-
941.
Pyrroles
Subjects
Heterocyclic compounds
-
942.
QSPR (Quantitative Structure-Property Relationships)
Subjects
-
943.
Qualitative chemical analysis
Subjects
Analytical chemistry
-
944.
Quantum chemistry
Subjects
Physical and theoretical chemistryQuantum theory
-
945.
Quinine
Subjects
AnalgesicsAntimalarialsMuscle relaxants
-
946.
Quinoxalines
Subjects
Heterocyclic compounds
-
947.
Radicals (Chemistry)
Subjects
Organic chemistry
-
948.
Radiochemical analysis
Subjects
Analytical chemistryRadiochemistry
-
949.
Radiochemistry
Subjects
Physical and theoretical chemistryRadioactivity
-
950.
Radioisotopes
Subjects
Nuclear engineeringIsotopesRadioactive substances
-
951.
Radioisotopes in biology
Subjects
Isotope geology
-
952.
Radioisotopes in geology
Subjects
Isotope geology
-
953.
Radioisotopes in pharmacology
Subjects
PharmacologyNuclear medicine
-
954.
Radium
Subjects
Alkaline earth metalsRadiationRadioactive substances
-
955.
Radon
Subjects
-
956.
Raman spectroscopy
Subjects
Spectrum analysisRaman effect
-
957.
Rape oil
Subjects
Vegetable oils
-
958.
Rare earth metals
Subjects
Nonferrous metals
-
959.
Rare earths
Subjects
MineralsOxides
-
960.
Rare gases
Subjects
Nonmetals
Last updated dated: 21/02/2026