I focus mostly in articles about Chemistry. I don't write much, but sometimes I create short articles about topics that I think deserve to be included. Most of the time, I focus in adding references, and sometimes data and figures, to existing articles. I also spend some time categorizing articles and creating redirects.

Articles that I have started

• Anomeric effect
• A value
• Aurophilicity
• Beta-methylamino L-alanine
• Birs
• Bredt's Rule
• Cardanol
• Charlot equation
• Cooling bath
• Crabtree's catalyst
• Curtin-Hammett principle
• Electron localization function
• Entatic state
• Equations of State Calculations by Fast Computing Machines
• Fragment-based lead discovery
• Free energy perturbation
• Friedrich Schickendantz
• Frustrated Lewis pair
• Gaston Charlot
• Heinrich Limpricht
• Hexafluoride
• Hippolyte-Victor Collet-Descotils
• Hoy No Circula
• Hydrogen molecular ion
• Institut de Chimie des Substances Naturelles
• Iridium(VI) fluoride
• Jeff Easley
• Journal of Computational Chemistry
• List of oxidation states of the elements
• Mallock machine
• Matrix (chemical analysis)
• Melvin Spencer Newman
• Mercury(IV) fluoride
• Name reaction
• Noble gas (data page)
• Non-stoichiometric compound
• Oxatriquinane
• Oxocarbon
• Physical organic chemistry
• Rajas con crema
• ReaxFF
• Robert H. Crabtree
• Robert Sidney Cahn
• Sabatier principle
• Sophus Mads Jørgensen
• Trans effect
• VALBOND
• Water dimer
• Water model

Other contributions (some bigger than others)

• Allotropy
• Banana bond
• Biphenyl
• Caesium perchlorate
• Carbon–fluorine bond
• Collective names of groups of like elements
• Chemical bond
• Chemical element
• Coprecipitation
• Covalent radius
• Cubical atom
• 2,5-Dimethylfuran
• GABA
• Gold(V) fluoride
• Hammett acidity function
• Helium hydride molecular ion
• Henderson-Hasselbalch equation
• Hill system
• History of the molecule
• HP calculators
• Hyperconjugation
• Iridium
• L-DOPA
• Lars Onsager
• Molecule
• Nitrogen
• Noble gas
• Ozone
• Partial charge
• Phlogiston theory
• PM3 (chemistry)
• Relativistic effect
• Sodium chromate
• Three-center four-electron bond
• Trifluoromethyl
• Timeline of chemistry
• Triple point
• Tropinone
• Turnover number
• Xenon

Categories I've created

• Category:Allotropy
• Category:Chemical databases
• Category:Dehydrating agents
• Category:Fluorinating agents
• Category:Halogen compounds
• Category:Mixed valence compounds
• Category:Name reactions
• Category:Non-stoichiometric compounds
• Category:Oxidizing agents
• Category:Philippine chemists‎
• Category:Physical organic chemistry
• Category:Polymerization reactions
• Category:Reaction mechanisms
• Category:Reactive intermediates
• Category:Reducing agents
• Category:Semiempirical quantum chemistry methods
• Category:Sterols‎
• Category:Stoichiometry
• Category:Thioesters

Articles I might create one day

• Natural bond orbital
• Rydberg potential, Extended Rydberg potential, Hulburt-Hirschfelder potential
• Hydricity
• Tolman electronic parameter
• Disilyne
• Computer-aided organic synthesis
• Dunham oscillator
• Potential of mean force

Pictures

See User:Itub/Gallery.