NH₃ Lewis Structure and the Structure of Ammonia
The NH₃ Lewis structure has three N-H single bonds, one lone pair on nitrogen, trigonal pyramidal geometry, and zero formal charge on all atoms.
January 26, 2026Articles
Silicon Dioxide in Food and Supplements: Safety, Uses, and Real Risks
Food grade silicon dioxide is generally considered safe at permitted levels, while the main silica risk is long-term inhalation of crystalline silica dust.
January 23, 2026
Glycerol: Properties, Uses, Production, and Medical Relevance
Glycerol is a hygroscopic triol whose solvent, humectant, sweetening, and osmotic properties explain its broad use in food, cosmetics, pharmaceuticals, and medicine.
January 17, 2026
Oxygen Element and O₂ Gas: Properties, Uses, Safety, and Toxicity
Oxygen is the element O, usually encountered as O₂ gas, with major roles in respiration, medicine, industry, and oxygen-related fire and toxicity risk.
January 12, 2026
Amoxicillin Trihydrate: Properties, Uses, Forms, and Pharmaceutical Relevance
Amoxicillin trihydrate is the main oral drug-substance form of amoxicillin, linking antibiotic mechanism, crystal form, dosage forms, and practical pharmaceutical use.
January 7, 2026
Sulfuric Acid vs Sulfurous Acid
Sulfuric acid and sulfurous acid differ in formula, strength, oxidation state, stability, and use, with sulfuric acid far stronger and more industrially important.
January 2, 2026
CO₂ Lewis Structure, Bonding, and Molecular Geometry
The CO₂ Lewis structure is O=C=O, with two double bonds, two lone pairs on each oxygen, linear geometry, and a 180° bond angle.
December 27, 2025
Hemoglobin Test Results and Normal Hemoglobin Levels
Hemoglobin test results show whether hemoglobin is low, high, or normal, but the meaning depends on age, sex, pregnancy, symptoms, and the rest of the CBC.
December 23, 2025
H₂O Lewis Structure, Geometry, Bond Angle, and Polarity
A compact guide to the H₂O Lewis structure, electron geometry, bent shape, 104.5° bond angle, hybridization, and polarity.
December 2, 2025
Sodium Chloride Explained: NaCl in Chemistry, Health, and Industry
Sodium chloride is NaCl, the main salt in body fluids, food, medicine, and industry, but both excess and deficiency can be harmful.
November 25, 2025