PBS
Why Sour May Be The Oldest Taste
While sour taste's original purpose was to warn vertebrates of danger, in a few animal groups, including us, its role has reversed. The taste of danger became something it was dangerous for us to avoid.
SciShow
Can Climate Change Make Lightning… Supercharged?
The oceans absorb a lot of CO2, leading to a variety of effects like ocean acidification. But you might not expect one of those effects: stronger lightning strikes.
SciShow
If There's Acid Rain, Is There Basic Rain?
You've probably heard of acid rain: rain that's more acidic than normal because of pollution in the atmosphere. But, if rain can become more acidic, shouldn't it also be able to become more basic?
SciShow
Can Climate Change Make Lightning… Supercharged?
The oceans absorb a lot of CO2, leading to a variety of effects like ocean acidification. But you might not expect one of those effects: stronger lightning strikes.
SciShow
The Only Water on Earth Without Life
When it comes to water on Earth, life finds a way. Even in the hottest, most acidic, and saltiest waters in the world, odds are you'll find some kind of organism adapted to live in it. There is, however, a place with water so extremely...
SciShow
Mysterious Mars News
Hank brings us news from planets all around the solar system: Mars, Mercury, and even planet Earth have been in the news lately. A retraction from NASA about the Curiosity mission; the discovery of water and organic material in craters...
SciShow
The Hidden Superpowers of Moss
You may not think much about moss, but it has a hidden super power, and it's been used to save countless lives.
Bozeman Science
Acids, Bases, and pH
Paul Andersen explains pH as the power of hydrogen. He explains how increases in the hydronium ion (or hydrogen ion) concentration can lower the pH and create acids. He also explains how the reverse is true. An analysis of a strong acid...
Curated Video
3 Worst Drinks for Your Health
Howcast - Learn about the three worst drinks for your health from nutrition expert Alex Jamieson in this Howcast video.
Curated Video
How to Treat & Prevent Heartburn
Howcast - Learn how to treat and prevent heartburn from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems.
Science ABC
Is Your Stomach Acid (Gastric Acid) Diluted When You Drink Water?
Short answer: Yes, drinking a lot of water will certainly change the pH of the stomach, but this amount is trivial. However, since your stomach is very acidic, to begin with, drinking water will not dilute it significantly. Also, there...
Curated Video
Acid rain
Rain that is unusually acidic, with a pH less than 5. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...
Curated Video
Indicator
A substance that provides a visual indication of the pH of a test material. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Acid
A compound which dissolves in water to form a solution with a pH of less than 7. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
pH
The pH scale measures the acidity or alkalinity of a solution. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Bouncing Eggs
We use vinegar to remove the shells from eggs without breaking them. Two eggs are placed in a beaker of vinegar, but one is half coated with clear nail polish. The exposed shells dissolve over time and the eggs swell as more water moves...
Curated Video
Aorta
The biggest artery in the body. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts and key...
Curated Video
Inductive Effect and Dipole Moment: Molecular Attraction Revealed
The inductive effect can also influence a molecule’s dipole moment, which measures the separation of charges within a molecule. Electron-withdrawing groups create a stronger dipole by pulling electron density away from less...
Curated Video
Acid Strength and the Inductive Effect: What’s the Connection?
The strength of an acid is often influenced by the inductive effect. Electron-withdrawing groups attached to an acid molecule can stabilize the negative charge on the conjugate base, increasing acid strength. Conversely,...
Curated Video
Electron Push and Pull: Inductive Effects Explained
The inductive effect is all about how atoms in a molecule affect electron distribution. Electron-withdrawing groups, like halogens, pull electrons through sigma bonds, reducing electron density in adjacent atoms. Conversely,...
Curated Video
The Surprising Benefits of Chewing Gum: Dental Health, Appetite Control, and Brain Function
Explore the multifaceted benefits of chewing gum, from improving dental hygiene to enhancing brain function. This video delves into scientific experiments that reveal how chewing gum can clean teeth, neutralize mouth acidity, suppress...
Curated Video
Factors Affecting Enzyme Function
Factors Affecting Enzyme Function explains how changes in pH, temperature, and concentration levels can affect enzyme function.
Curated Video
Is Your Stomach Acid (Gastric Acid) Diluted When You Drink Water?
Short answer: Yes, drinking a lot of water will certainly change the pH of the stomach, but this amount is trivial. However, since your stomach is very acidic, to begin with, drinking water will not dilute it significantly. Also, there...
Professor Dave Explains
Reactions of Beta-Dicarbonyl Compounds
Looking at the usage of beta-dicarbonyl compounds.