From ancient remedies to cutting‑edge science, the world of chemistry offers a handful of totally unexpected applications that will make you look at the periodic table in a new light.
Totally Unexpected Applications of Everyday Elements
10 Copper Has Antimicrobial Properties
Long before the age of modern science, ancient Egyptians already knew that copper could wipe out harmful microbes. Their texts describe copper being used to clean wounds, sterilize water, and treat ailments ranging from burns to mysterious growths.
Modern research confirms this “contact killing” effect: when bacteria touch a copper surface, the membrane ruptures, copper ions flood in, and the microbes die. Because of this, copper and its alloys now coat doorknobs, railings, and other high‑touch surfaces to keep germs at bay.
9 Phosphorus Can Be Used as a Deadly Weapon
Phosphorus is best known for matches and fertilizer, but its white allotrope turns into a terrifying weapon. Nicknamed “Willy Pete” during the Vietnam War, white phosphorus ignites instantly when exposed to air, burning skin and igniting clothing, fuel, and ammunition.
Its use sparks intense debate: some argue it should be classified as a chemical weapon and banned, while others note its role in tracer rounds and smoke screens because it produces copious smoke.
8 Arsenic Can Detect Tumors
Arsenic’s dark reputation is getting a second chance thanks to the arsenic‑74 isotope. A 2012 study showed that this isotope could generate crystal‑clear images of liver tumors in rats, suggesting a promising new diagnostic tool.
The researchers concluded that arsenic‑74 might one day help doctors spot tumors in humans without the side‑effects of more invasive techniques, though safety studies are still underway.
7 Sulfur Is Used in Winemaking
That rotten‑egg smell you associate with sulfur actually saves a lot of wine. Since the 15th century, winemakers have added sulfur dioxide to protect their barrels. Romans burned sulfur candles during transport, and a 1487 Prussian decree officially permitted its use.
Sulfur dioxide is a potent antimicrobial gas; it kills stray yeast that would otherwise turn wine into vinegar. Winemakers typically add a 10 % potassium metabisulphite solution, letting sulfur do its quiet, preservative work.
6 Gallium Can Detect Neutrinos
Gallium, the metal that melts in your hand, also helps scientists chase the universe’s most elusive particles—neutrinos. Researchers filled a tank with 101 tons of gallium‑trichloride‑hydrochloric acid, containing roughly 30 tons of pure gallium.
When neutrinos passed through, they induced nuclear reactions that turned gallium into germanium, which later formed germane. Detecting the decay of germane matched the number of neutrinos that entered, confirming the element’s role as a neutrino detector.
5 Cesium Is Used in Atomic Clocks
Atomic clocks keep the world on time, and cesium is the star of the show. These clocks lock an electric oscillator to the cesium atom’s natural transition frequency—exactly 9,192,631,770 Hz.
Cesium atoms pass through a microwave field tuned to that frequency; those that absorb the energy change state. A magnetic field separates the excited atoms, a detector records the peaks, and the frequency is divided by 9,192,631,770 to produce one precise pulse per second.
4 Xenon Is an Anesthetic
Xenon sounds like a sci‑fi planet, but it’s actually a noble gas found in Earth’s atmosphere that doubles as a medical anesthetic. It acts as a high‑affinity glycine‑site NMDA receptor antagonist, reducing the risk of hypoxia.
Unlike ketamine or nitrous oxide, xenon isn’t neurotoxic and even lessens the neurotoxicity of those agents. Plus, it’s not a greenhouse gas, so using more of it doesn’t harm the climate.
3 Bismuth Can Fight Diarrhea
Bismuth, once mistaken for tin or lead, now enjoys a spot in modern medicine. The pink liquid you sip or the pink tablet you chew for an upset stomach is bismuth subsalicylate, marketed as Pepto‑Bismol.
Its formula, C7H5BiO4, works by curbing the flow of electrolytes into the bowel and killing the microbes that cause diarrhea, all while delivering a soothing wintergreen flavor.
2 Zinc Can Be a Treatment for the Common Cold
Zinc is everywhere—from food to sunscreen—and researchers think it might also shorten the nasty run of a cold. Zinc acetate or zinc gluconate lozenges, and even nasal gels, have been shown to ease symptoms like congestion, sneezing, and coughing.
The breakthrough came when a leukemia patient dissolved a zinc tablet in her mouth and saw her cold vanish. Subsequent studies confirmed that zinc can reduce cold‑related discharge and inflammation, likely by acting on the throat’s mucosal lining.
1 Tungsten Is Used to Counterfeit Gold
Derived from the Swedish “tung sten” meaning “heavy stone,” tungsten—also called wolfram—has a density of 19.25 g/cm³, almost identical to gold’s 19.3 g/cm³. This similarity lets scammers plate tungsten bars with gold or pass off pure tungsten as gold in superficial tests.
Such scams date back to the 1980s and even fooled a German bank in 2010. While tungsten costs about $30 per pound, gold is dramatically pricier, making the deception lucrative—though it’s certainly illegal.