Curated Video
Ionic Bonding
How metals and non-metals combine to form compounds with unique and very different properties. Chemistry - Atoms And Bonding - Learning Points. An electrically charged atom is called an ion. Ionic bonds are very strong. Ions are formed...
Curated Video
Ion Migration
We separate the ions in copper dichromate gel using electrolysis. We see the positive blue copper ions move to the negative electrode and the negative yellow chromate ions move to the positive electrode. Chemistry - Reactions - Learning...
Curated Video
Silver Tree
We demonstrate a displacement reaction using silver nitrate and copper. A tree-shaped piece of copper is submerged in silver nitrate solution. The silver ions displace the copper and the tree slowly becomes coated with silver metal. At...
Curated Video
Extraction of Aluminium
Explore the difficulties of extracting aluminium from its ore, and how the vast quantities of heat and electricity generated by electrolysis allow this to happen. Chemistry - ReactionsLearning Points. Aluminium is difficult to extract...
Curated Video
Northern Lights
Discover how the chemical reactions which produce the extraordinary colours of the Northern Lights have their origins in outer space. Chemistry - Atoms And Bonding - Learning Points. Aurora Borealis, or Northern Lights, is a natural...
Curated Video
Electric Eels
Electric eels can generate amazing amounts of electricity inside their body. Discover how they use this for defence and to stun potential prey. Physics - Electricity And Circuits - Learning Points. Electric eels create electricity to...
Curated Video
Salt: Salt and Ice
Salt is routinely used to melt snow and ice on winter roads. But what is happening at the molecular level to cause this helpful change of state? Chemistry - Atoms And Bonding - Learning Points. When salt is added to water it lowers the...
Curated Video
Ionic bond
Very strong chemical bonds between oppositely charged ions. 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
Plasma (physics)
A gaseous state of matter which contains a significant proportion of electrically charged particles called ions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Delocalised electrons
In a metal, each metal atom readily gives up its outer shell electrons, resulting in a sea of free electrons flowing throughout a lattice of positively charged metal ions. A Twig Science Glossary Film. Key scientific terms defined in...
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Bond Fission Explained: Homolytic vs. Heterolytic Splits
Bond fission, the process of breaking chemical bonds, can occur in two ways: homolytic and heterolytic. In homolytic fission, the bond breaks evenly, with each atom receiving one electron, resulting in the formation of free radicals. In...
Curated Video
Chemical Reactions: Oxidation and Reduction
By the end of this learning object, the learner should be able to: Identify Oxidation – reduction reactions by gaining or losing electrons
Wonderscape
Understanding Chemical Reactions: Reactants, Products, and Chemical Bonds
Learn about the components of a chemical reaction, including reactants and products, and how chemical bonds are affected during the process. Explore examples like cookies and rusty bike fenders to understand these concepts better. All...
Wonderscape
Understanding Chemical Reactions: Physical vs. Chemical Changes
Explore the concepts of physical and chemical changes in matter through examples like cookies and rust. Learn how to distinguish between physical properties and chemical reactions. All About Chemical Reactions part 1
Curated Video
4 Things to Know to Pass Chemistry
Chemistry is a class that most students will have to take in order to pass chemistry and graduate from high school. In this video, we go over 4 things that you must know in order to pass chemistry! Topic 1: Atomic Structure Topic 2: Atom...
Curated Video
Chemistry - Shorthand (Noble Gas) Electron Configuration
Writing electron configurations can be a long and daunting task, until you learn the shortcut! Often times called the noble gas configuration, the shorthand notation will have you writing electron configurations very quickly! In this...
Curated Video
Discovering Reaction Molecularity
Molecularity definition, Determination of molecularity in HI decomposition. Order & Molecularity of Reaction part 2
Curated Video
Revealing the Dynamics : The Effect of Pressure and Concentration on Reaction Rates
Factors Affecting Rate of Reaction - Concentration & Pressure, Rate of Ammonia, electronic explanation, influence of bonds on rate, formation of ZnCl2, role of Effective collisions & Partial Pressures. 3 Factors influencing Rate of...
Curated Video
Is The Fulminated Mercury Scene From Breaking Bad Scientifically Accurate?
While it is true that a crystal of mercury fulminate would explode when slammed to the floor, the crystal depicted in the show Breaking Bad did not accurately represent the appearance of mercury fulminate. Commercial-grade mercury...
Curated Video
Biology - Structure of the Kidneys - (Kidneys Part 2/3) #28
This video covers: - The structure of the kidneys and urinary system - The structure of the nephron - How filtrate is filtered from the glomerulus to the Bowman's capsule - Which substances are reabsorbed from the tubules into the blood...
Curated Video
Biology - Kidney Failure (Kidneys Part 3/3) #29
This video covers: - What happens when the kidneys stop working (kidney failure) - How we can treat kidney failure - What dialysis is, and how it cleans the blood - How a kidneys transplant works
Curated Video
Biology - How the Kidneys Work - (Kidneys Part 1/3) #27
This video covers: - The 3 main functions of the kidneys: 1) removing waste, 2) regulating levels of ions, and 3) regulating levels of water - How the kidneys can achieve all of this using filtration and selective reabsorption - How...
Curated Video
GCSE Chemistry - Electrolysis Part 3 - Aqueous Solutions #42
In this video we cover: - How the electrolysis of soluble compounds works - The rules to find out which ions are discharge at each electrode - Electrolysis of aqueous copper sulfate - Electrolysis of aqueous sodium chloride This video is...
Curated Video
GCSE Chemistry - Electrolysis Part 1 - Basics and Molten Compounds #40
This video covers: - What electrolysis is - The equipment of electrolysis and how it should be set up - An example of electrolysis with a molten compound