Topics: Organic Chemistry, organic molecules, Lewis structures, hybridization, carbon, Hydrocarbon Derivatives

Topics: organic molecules, chemical bonding, alkanes, cycloalkanes, alcohol, ether, amine, sterochemistry, organic spectrometry, multiple bonds, conjugation, electronic effect, Carbonyl Group, oxidation reaction, reduction reaction, carbohydrate, lipid, peptide, protein, amino acid, nucleic acid, bioorganic compound

Topics: organic chemistry, carbon atoms, organic compounds, functional groups, fractional distillation, paper chromatography, ion-exchange chromatography, gas chromatography, elemental analysis, ultraviolet spectroscopy, spectroscopy, nuclear magnetic resonance spectroscopy, isomerism, atomic orbital, petroleum, coal chemistry

Topics: Delirium, Dementia, Amnesic syndrome, Organic mood disorder, Organic delusional disorder, Organic personality disorder, Alzheimer's disease, transient global amnesia

Topics: organic chemistry, substitution reaction, elimination reaction, carbonyl compounds, aromatic compounds, bioorganic compounds

Topics: soil properties, soil management, tropical environment, temperature, solar radiation, rainfall, tropical climates, vegetation, physiography, Anthropocene, biodiversity, climate change, demographics, Green Revolutions, Tropical Agroecosystems, land use, land-use change, Pedology, Physics, Chemistry, Biology, Laterite Paradigm, tropical soils, tropical soil research, Soil Taxonomy, soil classification systems, soil physical properties, soil temperature, soil structure, soil compaction, soil water, soil erosion, conservation, conservation agriculture, water, rainfed agriculture, irrigated agriculture, irrigation, mineralogy, clay minerals, mineralogy families, Anion Exchange Capacity, soil acidity capacity, Acid Soil Infertility, Liming, overliming, subsoil acidity, secondary acidity, soil biology, soil biodiversity, comminution, decomposition, nutrient elements transformation, soil structure regulation, organic carbon, carbon pools, carbon fractions, animal manures, composts, biochars, organic farming, soil fertility, nutrient cycling, nutrient uptake, determining fertilizer needs, nitrogen cycle, nitrogen pools, atmospheric deposition, biological nitrogen fixation, mineral fertilizers, organic nitrogen mineralization, soil nitrogen fertilizer reactions, Phosphorus Cycle, Phosphorus, Total Soil Phosphorus, inorganic Phosphorus, Phosphorus sorption, Phosphorus release, plant Phosphorus requirements, Phosphorus fertilization, sulfur cycle, sulfur sorption, Sulphur fertilization, Forest–Soil Nutrient Cycles, land clearing, Mechanized Land Clearing, Crop Yield Declines, Field Abandonment, Secondary Forest Fallows, puddling, flooding, rice cultivation systems, Nutrient Management, Yield Stagnation, Nitrogen Sequestration, Livestock-Based Tropical Systems, tropical pastures, Tropical Livestock Management Systems, pastoralism, Smallholder Mixed Crop–Livestock Systems, Extensive Pasture-Based Beef Production, Pasture Degradation, Crop–Pasture Integration, Tropical Tree-Based Systems, Plantation Forestry, Plantation Forestry Species, Agroforestry, Agroforestry Tree Species, Agroforestry Systems, Simultaneous Agroforestry, Sequential Agroforestry, tree crops

Topics: organic chemistry, bonding, homologous series, functional group, organic compounds classification, Alkanes, alkenes, alkynes, alkanols, halogenoalkanes, alkanals, alkanones, alkanoic acid, alkanoates, acid chloride, acid anhydride, acid amide, amines, nitrides, cyclocompunds, qualitative analysis, quantitative analysis

Topics: Organic compounds, separation of organic mixtures, distillation, sublimation, chromatography

Topics: Molecular Orbital Theory, Molecular Orbital Methods, Electron Density Functionals, Electron Density Distribution, Stereochemistry, Conformation, stereoselectivity, Molecular Mechanics, Structural Effects on Stability, Structural Effects on Reactivity, chemical kinetics, Kinetic Isotope Effects, catalysis, Nucleophilic Substitution, polar addition, elimination reactions, carbanions, carbon nucleophiles, carbonyl compounds, aromaticity, annulenes, homoaromacity, aromatic substitution, Concerted Pericyclic Reactions, Concerted Pericyclic Reactions, Photochemistry

Topics: Organic Chemistry, Hydrocarbon, alkane, Fractionating column, alkene, Ozonolysis, alkynes, benzen, alchohols