The Chemistry Behind Perms
This video explores the chemistry of hair and the hairstyle known as the permanent wave, which is commonly called a perm or permanent.
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Video
The Chemistry of Matches
To fire up the grill or a gas stove, we often reach for a match. It turns out there's a lot of chemistry going on to make those little wooden wonders work. The best way to find out about the chemistry of a burning match is to watch this video, which shows this action in ultra-slow motion.
The Chemistry of Matches
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The Chemistry Used in Fighting Forest Fires
This video explores how experts use fertilizer and other materials—including water—to fight forest fires.
The Chemistry Used in Fighting Forest Fires
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Diffusion of Gases
This animation explains the science behind the diffusion of gases through random molecular motions.
Diffusion of Gases
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Do Anti-Aging Creams Really Work?
Would you like a younger, more perfect-looking you? Young skin is firm and stretchy because of protein fibers, called collagen and elastin, in the tissue beneath the surface. As we age, environmental factors, such as smoking or ultraviolet rays from the Sun, can produce free radicals that damage skin cells’ ability to make more of these supports. The result is wrinkly skin. Anti-aging treatments claim to keep the skin surface fresh and rejuvenate these cells, but do those creams work? This video has the answer.
Do Anti-Aging Creams Really Work?
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Electrolytes and Physical Activity
Sports-drink commercials often mention electrolytes, but why do we need these chemicals, and what happens if we don't have enough of them? Electrolytes are salts that help our cells move water around, and enable nerve impulses that keep our hearts beating, our lungs breathing, and our brains learning. But our bodies can also lose electrolytes—for example, by sweating. Given all the ins and outs of electrolytes, should you reach for that brightly colored sports drink after running around the block? This video may have the answer.
Electrolytes and Physical Activity
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Foam Explosion: Elephant Toothpaste
You might have seen this demonstration in a chemistry class or on late-night TV. Dropping a mixture into hydrogen peroxide produces a huge, foamy flume. What causes that big mess? It's actually a great illustration of a key concept in chemistry: catalysts. In this video, chemistry professor Matt Hartings explains the "Elephant Toothpaste" phenomenon, with the help of a high-speed camera.
Foam Explosion: Elephant Toothpaste
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How Diffusion Works
This animation explains how diffusion randomly distributes the molecules dissolved in a solution.
How Diffusion Works
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How Do Sparklers Work?
Across the globe, people celebrate certain holidays with fireworks. In the U.S., the Fourth of July is an especially sparkly holiday. This video takes an up-close, slow-motion look at the chemistry of how sparklers work.
How Do Sparklers Work?
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How Much Does a Cloud Weigh?
This video explores the chemistry behind how clouds develop and how they stay aloft in the sky, despite their tremendous weight.
How Much Does a Cloud Weigh?