Why do shell building living creatures live near the surface of the ocean? Learn how chemistry creates a dissolving depth for calcium and determines where shell builders can live.

Sugar alcohol sounds like a fun adult dessert, but what is it really?

On top of our heads, there is a type of yeast that lives and dines on all of our scalps. Feasting constantly, it's in paradise. And in about half of the human population, its activity causes dandruff. So, why do some people have more...

Dietary science is complicated-- one day something is good for you and the next it's not. Learn what we DO know about fat chemistry in this episode of SciShow.

As the narrative goes, fat is bad. Well, it's actually more nuanced than that. The type of fat you eat is more impactful on your health than the quantity. George Zaidan examines triglycerides, the varied molecules that make up fat, and...

In this video Paul Andersen describes the lipids (of the fats). He explains how they are an important source of energy but are also required to cell membranes. He explains how the hydrocarbon tails in triglycerides contain energy...

Today Hank talks about the deliciousness of alkenes & alkynes, their structures, and how to remember which is which by simply knowing the alphabet. Also, he breaks down hydrogenation, halogenation, polymerization, and...

Paul Andersen describes the macromolecules that make up living organisms. He starts with a brief description of organic chemistry and the importance of functional groups. He also covers both dehydration and hydrolysis in...

Concentrations of solute in a solvent.

Can Eggs Be Part of a Healthy Diet?

Howcast - Learn which vegetable oils are the healthiest and which are bad for you from nutrition expert Alex Jamieson in this Howcast video.

There are 4 main types of carbon-based molecules important to life. They are the building blocks for every living organism on this planet. In this video, I will give you a quick introduction to each type with some fun examples.

Rancidity refers to the complete or incomplete hydrolysis or oxidation of fats and oils when exposed to air, light, moisture, and bacterial activity; this generally occurs in food items, making them undesirable for consumption. In more...

The difference between air-drying and tumble-drying is that air-drying keeps the cellulose fibers from reforming their hydrogen bonds more effectively, which makes the towel feel a bit fluffy. Tumble drying, on the other hand, causes the...

The level below which the ground is completely saturated with water.
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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...

We use a supersaturated solution of sodium ethanoate to demonstrate instant crystallisation. Sodium ethanoate is added to water and is then heated to allow all of the crystals to dissolve. When it is cooled it forms a supersaturated...

Salt is found in the oceans and Earth's surface. How do we collect this salt and separate it from the materials it is mixed with? Chemistry - Atoms And Bonding - Learning Points. Salt is found in oceans, lakes and underground rock beds....

There are 3 different types of solutions - unsaturated, saturated and supersaturated. The main difference between these 3 types of solutions is the amount of solute in each type of solution. In this video, we explain the 3 different...

Surprisingly, despite the sun's heat, lakes don't visibly evaporate like a glass of water. There are two main reasons for this: first, the amount of water present in lakes and large water bodies is huge (at least compared to what you...

The difference between air-drying and tumble-drying is that air-drying keeps the cellulose fibers from reforming their hydrogen bonds more effectively, which makes the towel feel a bit fluffy. Tumble drying, on the other hand, causes the...

Dr. Forrester explains how we obtain energy from various food sources.

Polyunsaturated fat

In this video you'll learn:<br/>
- Two methods <br/>of cracking
- How to write a balanced<br/> equation for cracking
- What an alkene is, a<br/>nd how they diff<br/>er from an alkane
- The test for alkenes
- The properties of alkenes

The Water Cycle and the Ocean explains the water cycle by describing the basic components of the water cycle, including the ocean’s important connection to Earth’s water reservoir.