Winter: It's that time of year when you're out for a stroll and maybe miss a hidden patch of ice and fall flat on your butt. Why you gotta play us this way, ice?

Mr. Andersen gives a brief description of osmosis. He explains how water moves from a hypotonic to a hypertonic solution across a semipermeable membrane. The video ends with a time-lapse demon in class.

When you think of surfactants, you might think of soaps, detergents and other man-made chemicals. But it turns out that some other animals utilize their own versions of these sudsy molecules.

Why does ice float? You might not think about it, but this special property of frozen water is what makes your iced tea tinkle and makes a lot of aquatic life possible. Hank gets in touch with his inner Olaf to explain the wonder that is...

Ever wonder how lightning works? Scientists are still figuring it out, but what we do know is fascinating. Learn about positive and negative lightning, red sprites, blue jets, and ball lightning in this episode of SciShow!

In this video Paul Andersen compares and contrasts the properties of solids and liquids. Solids have a more organized structure which can either be amorphous or crystalline. In liquids the intermolecular forces are lower and so the...

Paul Andersen starts by defining transpiration as evaporation off of a leaf. He then describes how a potometer can be used to measure the rate of transpiration in different environments.

Snowflakes are infinitely beautiful, but are they infinitely unique? Here's all the science behind Earth's favorite cold crystal

This Science 6 instructional video details the unique properties of water.

DIY SCI host Steve Spangler demonstrates how to do the soap soufflé experiment and explains what causes the reaction!

DIY SCI host Steve Spangler demonstrates how to crush a can using a little bit of water, some heat, and air pressure!

DIY SCI host Steve Spangler demonstrates how using heat and a little water can cause air pressure to crush a can!

Osmosis is the movement of water across a semipermeable membrane from a region of lower solute concentration to higher concentration. Tonicity refers to how an extracellular solution affects a cell’s water content, described as...

Passive transport includes diffusion, facilitated diffusion, and osmosis, all of which move substances down their concentration gradients without energy input. Small, uncharged molecules like oxygen and carbon dioxide diffuse freely,...

Plants absorb water from the soil using root hairs, and transport it through three main pathways: vacuolar, symplast, and apoplast. In the vacuolar pathway, water moves through vacuoles and plasmodesmata but faces high resistance. The...

What is the difference between a molecule and a compound? What are the main types of chemical bonds? In this video, we will be answering those questions and more.

Understanding the mole and how to use it is essential to your success in chemistry. The mole just represents the amount of a substance. 1 mole of anything is equal to 6.02 x 10^23 which is known as Avogadro's number. This number tells us...

Is Water Bulletproof?

Join the Serial Testers as they explore the science behind ice formation with cold specialist Anthony Delahaye. Learn how water molecules behave at different temperatures and discover the process of creating stunning ice...

Can anything travel faster than the speed of light? Is it even possible for something to undertake the “speed of light” travel? And what if something can actually travel faster than light? What is Cherenkov radiation and how is it...

Yes, water expands when it freezes. Note that the word expands here indicates an increase in volume. So, a technically sound way to put it would bewaters volume increases when it freezes. This statement is accurate, and you can test its...

Yes. Microwaves and radio waves are physically the same, i.e. both are forms of electromagnetic radiation. Some microwave rays can leak out and interfere with WiFi signals. We are basically constantly surrounded by electromagnetic...

The random movement of small, visible particles suspended in a liquid or gas, when viewed under a microscope.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images...

A solid compound that contains water molecules in a defined ratio.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...