chemistry

16 articles · All tags

• How the Haber–Bosch Process Makes Fertilizer From Air
  The Haber–Bosch process combines nitrogen from air with hydrogen over an iron catalyst at high heat and pressure, making ammonia for synthetic fertilizer.
• Steel and Alloys Explained: How Carbon and Chromium Work
  Steel is iron with a little carbon, and carbon atoms block the crystal defects that let iron bend, which is why steel is so much stronger than pure iron.
• Why Was Ultramarine So Expensive? Lapis Lazuli Explained
  Ultramarine was a deep blue pigment ground from lapis lazuli, and its cost came from scarce stone and a slow purification that yielded little pure blue.
• Fresco Painting: How Artists Paint Into Wet Plaster
  Fresco is painting with pigment mixed in water onto wet lime plaster, so the colour is locked into the wall as the plaster dries and hardens, making it durable.
• What Is Caramelization? How Sugar Browns When Heated
  Caramelization is the browning of sugar when heated, as its molecules break down and recombine into many new compounds that give caramel its colour and flavour.
• How Carbonation Works: Why Soda Fizzes and Goes Flat
  Carbonation dissolves carbon dioxide gas into water under pressure. When the bottle is opened, the pressure falls and the gas escapes as bubbles, which is the fizz.
• 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.