chemistry

10 articles · All tags

• The Periodic Table
  The periodic table explained: how 118 elements are ordered by atomic number into groups and periods, and why position predicts properties and bonding.
• The Vulcanization of Rubber
  How heating raw rubber with sulfur cross-links its polymer chains — the 1839 discovery that turned a sticky sap into the material of tires, seals, and modern industry.
• Bioluminescence
  How living organisms produce cold light through luciferin-luciferase chemistry, why most glowing things live in the deep ocean, and how biologists borrowed the reaction.
• How Soap and Detergents Work
  Why one molecule can dissolve both oil and water: surfactant chemistry, micelles, hard-water scum, and the difference between soap and detergent.
• The Science of Coffee Extraction
  Why coffee tastes bitter, sour, or balanced: extraction yield, grind size, water temperature, and the chemistry that turns a bean into a cup.
• How Batteries Work
  Batteries explained: oxidation and reduction at two electrodes, why voltage is chemistry, why capacity fades, and what actually limits fast charging.
• Oxidation and Reduction
  Redox reactions in which electrons transfer between species and oxidation states change — the basis of batteries, corrosion, and metabolism.
• Chemical Bonding
  The forces that hold atoms together in molecules and crystals: ionic, covalent, and metallic bonds determined by electronegativity differences.
• Functional Groups
  The characteristic atom groupings in organic molecules that determine their chemical behavior and reactivity.
• pH and Acid–Base Chemistry
  The pH scale, the equilibrium chemistry of acids and bases, and the role of buffers in maintaining stable conditions.