Chemistry

Chemistry is the science of matter and the changes it undergoes during chemical reactions. In this section, learn about everyday chemistry, from chlorine beach to helium, and even why chocolate turns gray.

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If you've ever had a half-frozen beer explode on you, you know that yes, alcohol freezes — but not all types freeze at the same rate. We'll let you in on the secrets to frozen alcoholic delights.

By Alison Cooper

First there was Volvo. Then came IKEA. Well get ready for the next major Swedish export: snus, a smokeless tobacco product, similar to dip or chew.

By Matt Schwarzfeld

Mass spectrometry enables the major league to sniff out athletes guilty of doping. It can also help us locate oil or design a killer perfume. Who says chemistry isn't cool?

By William Harris

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More than fodder for melt-in-your-hand YouTube videos, gallium is a key component in LED lights and the powerful microchips in your smartphone.

By Dave Roos

Scientists at the Lawrence Berkeley National Laboratory just made history with einsteinium. They held a sample of the short-lived element long enough to measure some of its chemical properties.

By Dave Roos

From soap to pharmaceutical products, glycerine has many applications.

By Jesslyn Shields & Austin Henderson

Adrenochrome has been linked to schizophrenia and the LSD counterculture movement. Now QAnon conspiracy theorists say it's part of a child sex-trafficking cult. So what's the truth behind this chemical compound?

By Jennifer Walker-Journey

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Hand warmers work through simple chemistry. A massively sped-up version of oxidation (the chemical reaction that makes rust) is to thank.

By Kristen Hall-Geisler

It's an odorless gas that's present in a variety of home products, cosmetics, car exhaust and even humans. But is it bad for us?

By Michelle Konstantinovsky

Bismuth is a naturally occurring element with many applications in our daily lives, but even more than that, it looks amazing when it cools!

By Jesslyn Shields

Denatured alcohol is useful for lots of things, but drinking definitely isn't one of them.

By Jesslyn Shields

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Diatomic elements are molecules composed of only two atoms, every time, always. There are only seven of them on the entire periodic table.

By Kristen Hall-Geisler

Electrons are attracted to some atoms more than others. If two atoms are of equal strength, the electrons will be equally shared. If one atom is stronger, the electrons will be pulled in that atom's direction.

By Jesslyn Shields

The two different types of alcohol are commonly used in hand sanitizer today. But does one work better than the other?

By Kristen Hall-Geisler

Don't know your fool's gold from the real deal? We'll tell you how to tell what's pyrite (aka fool's gold) and the good ol' 24 karat stuff you want.

By Mark Mancini

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Tungsten's hardness and heat resistance make it a must for products like rocket engine nozzles, armor-piercing bullets and even the humble light bulb filament. In fact, pure tungsten boils at 10,030 F, the same as the photosphere of the sun.

By Dave Roos

You might wonder what phosphates do, but they are so intrinsic to our daily lives that the question really is: What don't phosphates do?

By Jesslyn Shields

You don't need to be a fan of chemistry to appreciate isotopes. They affect geology and medicine, too.

By Mark Mancini

Long-banned in the U.S., except for religious purposes, peyote is starting to be decriminalized in some cities. But is that a good thing for this endangered plant?

By Nathan Chandler

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Making chemical compounds is a lot like dating. Some ions are naturally compatible; others hook up out of desperation.

By Jesslyn Shields

Award-winning poet and fiction writer Mary Soon Lee has found a charming way to combine science and poetry in a refreshing new take on the periodic table of elements.

By Carrie Tatro

It's a force of habit to shake spray canisters, but when it comes to canned air, that inclination could cause frostbite.

By Laurie L. Dove

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Borax, a popular addition to laundry detergents and slime recipes, is a natural ingredient that has been getting flack for possibly being harmful to children. But is this true?

By Alia Hoyt

Developed in Israel, this foul-smelling liquid has been used on Palestinian and Israeli protesters … and it's showing up in the United States.

By Sarah Gleim