Physical Science
Physical science is the study of the physical world around you. Learn about everything from electricity to magnetism in this section.
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Venn diagrams are an easy way to simplify information and visualize relationships between concepts or sets of data.
Purified water will 'instantly freeze' under certain conditions, and you can even make it happen at home. Is it magic? No. It's science!
We may think the butterfly effect means that a small change (like the flap of a butterfly's wings) can have huge consequences (a tornado in China). But what if it means the opposite?
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Boyle's Law describes the relationship between pressure and the volume of a container with gas in it. As the volume of the container decreases, the pressure inside the container increases.
Corresponding angles are what you get when two parallel lines are crossed by a third line, creating angles that have the same relative position at each intersection. They're easy to find once you know what to look for.
A dodecahedron has 12 flat faces, all shaped like pentagons. Here are 12 cool things you just may not know about them.
By Mark Mancini
The two different types of alcohol are commonly used in hand sanitizer today. But does one work better than the other?
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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.
How do you calculate absurdly high numbers without writing them out in numerals? You use scientific notation. We'll give you examples and show you how.
By Mark Mancini
Diatomic elements are molecules composed of only two atoms, every time, always. There are only seven of them on the entire periodic table.
Denatured alcohol is useful for lots of things, but drinking definitely isn't one of them.
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Bismuth is a naturally occurring element with many applications in our daily lives, but even more than that, it looks amazing when it cools!
A research team has found that water acts strangely on an air-drying towel, which contributes to its signature stiffness.
Entropy is the disorder of a system, but that means a lot more than making a mess of a room.
Weight is the measurement of gravity's pull on an object. And it varies by location. Mass is a different beast altogether.
By Mark Mancini
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The Standard Model of physics provides a framework for the subatomic world of all energies. Could a possible newfound carrier boson expand the definition of that framework?
By Mark Mancini
The Pythagorean theorem, which explains how to calculate the longest side of a right-angled triangle, is an ancient mathematical statement that still buttresses modern-day construction, aviation and even how we navigate through traffic.
Protons and neutrons, the particles that form the nuclei of atoms, are themselves made up of even smaller particles known as quarks.
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Two mathematicians have solved a decades-old math problem by harnessing the power of a virtual supercomputer.
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?
Making chemical compounds is a lot like dating. Some ions are naturally compatible; others hook up out of desperation.
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?
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Primary colors are the blocks from which all other colors are built. But there's a lot more to know about them than the basic red, yellow and blue we learned about in kindergarten.
Alchemy may seem like a cousin to witchcraft but in reality it was the forerunner of modern chemistry.