PBS
Where Are All The Squid Fossils?
It might surprise you but cephalopods have a pretty good fossil record, with one major exception. If squids were swimming around in the same oceans as their closest cousins, where did all the squids go?
SciShow
The Weird Reason More Bridges Are About to Fail
While they are incredible engineering marvels, we don't think about bridges all that much. But there's a good reason we should all be thinking about our bridges, since there's a weird reason that more of them might be at risk of failure...
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?
Bozeman Science
pH and Buffers
In this video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer solution...
SciShow
What Does My Pee Say About Me?
The pee you just flushed without thinking could be a great sample to know what is going on in your body!
SciShow
The Strongest Bases in the World
Acids are widely considered to be the scariest chemical compounds of all, but bases can be just as powerful. Most powerful of all are a special class of pH scale-defying bases called superbases!
Amoeba Sisters
Enzymes (Updated)
The Amoeba Sisters explain enzymes and how they interact with their substrates. Vocabulary covered includes active site, induced fit, coenzyme, and cofactor. Also the importance of ideal pH and temperatures for enzymes are discussed.
Bozeman Science
Acid-Base Equilibrium
In this video Paul Andersen explains how acid-base chemistry can be understood in terms of equilibrium. Water is present in all acid-base chemistry and is amphoteric in nature. The Ka and Kb values can be used to determine the strength...
Bozeman Science
Ocean Acidification
In this video Paul Andersen shows how carbon dioxide in the atmosphere is causing a decrease in the pH of the oceans. The carbon dioxide combines with the water to create carbonic acid which dissociates into bicarbonate and carbonate...
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...
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...
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...
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...
Curated Video
Factpack: pH Scale
Explore the pH scale, and discover whether a solution is acidic, alkaline or neutral.
Chemistry - Reactions - Learning Points.
A Twig FactPack Film.
Open a discussion on what has been already learnt in a topic, or use to grab...
Curated Video
Acids and Alkalis: Part 2
Alkalis and acids can be neutralised to great and varied effect. For example, it is neutralisation reactions that help us breathe underwater or cure indigestion.
Chemistry - Reactions - Learning Points.
A neutral solution is pH...
Curated Video
Acids and Alkalis: Part 1
The properties of strong acids and alkalis can be extremely harmful. Where do we find them, and how can we tell how acidic or alkaline a substance is?
Chemistry - Reactions - Learning Points.
Bases neutralise acids, and if a base...
Curated Video
ph Sound | Learn Phonics | ph words | Learn to Read | British Teacher
Explore the 'ph' sound with Miss Phonics. Learn how to identify the sound, write the sound and read words that use the 'ph' sound.
The 'ph' sound is a digraph or 'special friend' because it is made up of two letters. The 'ph' sound...
Curated Video
GCSE Biology - Enzymes - How Temperature and pH Affect Rate of Reaction
This video covers:
- How temperature affects enzymes and the rate of reaction
- How pH affects enzymes and the rate of reaction
- Why enzymes denature
- Was optimum temperature and optimum pH mean
Curated Video
GCSE Chemistry - The pH Scale & Strong vs Weak Acids (Higher Tier) #35
One of the most confusing points with acids is the difference between strength and concentration. This video covers exactly what strong vs weak means and explains what the pH scale really represents.
This video is suitable for:
-...
Rock 'N Learn
PH & GH Digraph Sound Song and Practice
This animated phonics song helps children learn the sound of the digraph PH and the digraph GH in English. A digraph is a combination of two letters representing one sound. Colorful characters teach kids two words at a time with the PH...
Curated Video
Lab – Factors that Affect Enzymes
Visual demonstration of the lab factors that affect enzymes
Professor Dave Explains
Acids and Bases, pH and pOH
We've all heard the terms acid and base. What do these mean? Don't just tell me about pH, silly. What structural detail makes a molecule an acid or a base? You don't know? Well, you'd better watch this then. You don't want to be...