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 7 Sodium...
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
Acidification of Water
We use a drinking straw, some water and universal indicator to show that breathing out creates acid. Universal indicator is added to the water to show its pH value. When we blow into the water the indicator changes colour showing that...
Curated Video
Irritant
A substance that produces inflammation or pain on contact with skin, eyes, the respiratory system or other membranes such as stomach linings. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
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
Naming Acids Explained
Struggling to name acids? In this video, we break down naming acids into 3 easy steps. Once you understand these steps, naming acids will be easy for you!
Curated Video
Understanding Cavities: Prevention and Treatment
This video explains what cavities are, how they are caused by plaque and bacteria, and the importance of getting them fixed by a dentist to prevent tooth decay and toothaches. It also describes the process of fixing a cavity, including...
Financial Times
Towards more sustainable fertilisers
As the world’s population grows so will our use of synthetic fertilisers. Innovations mean more sustainable options exist, but they still must be viable
Curated Video
GCSE Chemistry - Acids and Bases #34
This video is covers what acids and bases are, what the pH scale is, how we measure pH with indicators and probes, and what neutralisation reactions are.
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: - Higher...
Curated Video
GCSE Chemistry - Reactivity Series of Metals & Displacement Reactions #37
When metals react they lose their outermost electrons. This video covers which metals are the most and least reactive & also how we can determine reactivity by reacting them with acids and water. Then at the end we cover displacement...
Curated Video
GCSE Chemistry - Neutralisation Reactions #36
This video covers how acid react with different types of bases - metal oxides, metal hydroxides, and metal carbonates. It also covers the practical technique of how to make soluble salts from an insoluble base. This video is suitable...
Curated Video
What's Inside A Filter Drier - How it works hvac
What's inside a filter drier and how do they work. In this video we'll be cutting open a hermetic filter drier from a refrigeration system to look at the internal components and learn how the unit works and where it is used to help you...
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...
Professor Dave Explains
Pericyclic Reactions
Professor Dave explains the science and theory behind pericyclic reactions (Part One)
Curated Video
I WONDER - What Does A Low PH Mean?
This video is answering the question of what does a low PH mean.
Professor Dave Explains
Organocuprates (Gilman Reagents)
We've seen organometallic reagents featuring magnesium, as well as lithium, so how about copper? These are called organocuprates, or sometimes Gilman reagents. What do they look like? How do we make them? What do we do? Let's take a look!
Visual Learning Systems
Compounds in Chemistry Review
This video is a review of the topics covered in the Compounds in Chemistry series. In this series, we explored the fascinating world of compounds in chemistry. We learned about the formation of compounds from the bonding of atoms, and...
Professor Dave Explains
Pericyclic Reactions 2
Professor Dave explains the science and theory behind pericyclic reactions (Part Two)
Professor Dave Explains
Heterocycles Part 1: Furan, Thiophene, and Pyrrole
We've mentioned heterocycles before. They are cyclic molecules where one or more atoms in the ring are not carbon. Typically these involve oxygen, nitrogen, and sulfur. But there are so many different heterocycles. Different sizes, some...
Professor Dave Explains
The Haloform Reaction
Once again, we will be interested in learning about reactions that break carbon-carbon bonds, as this will allow us to perform necessary transformations on substrates. The haloform reaction is one such reaction, and it is commonly used...
Professor Dave Explains
Carbenes Part 2: Cyclopropanation, C-H Insertion, and the Bamford-Stevens Reaction
In the previous tutorial we learned about carbenes. So now that we understand their properties, we are ready to learn about what we can do with them. Three major uses of carbenes involve cyclopropanation, C-H insertion, and the...
Professor Dave Explains
Pericyclic Reactions 4
Professor Dave explains the science and theory behind pericyclic reactions (Part Four)