Curated Video
What was the Secret Weapon of the Carthaginian Empire?
What was the Secret Weapon of the Carthaginian Empire?
Curated Video
Tracing the Journey of a Bottle in the Ocean
Join Vincent, Agathe, and David as they investigate the journey of a bottle thrown into the sea. Inspired by the famous 1992 plastic duck experiment, they study ocean currents, including surface and deep currents, to predict the bottle's...
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Most common types of hydrolysis - Study with me
In acid and base chemistry, we learn that there are 3 main types of hydrolysis: salt, acid and base. In this video, I will show you a fun and crafty way to spice up your organic chemistry notes on this topic.
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Introducing SALT: The Southern African Large Telescope and its Spectrometer
The Southern African Large Telescope (SALT) is a groundbreaking optical telescope that will provide scientists with a unique window into the southern skies. Equipped with a state-of-the-art imaging spectrograph, SALT will analyze light...
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The Science and History of Soap: How it Cleans and Protects
In this video, the teacher explains the science behind soap and how it cleans our skin. They discuss how soap is made from fatty acids and salt, and how it emulsifies to mix with water and remove dirt and grime from our skin. The teacher...
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Why the Fastest Place on Earth is Disappearing
The Bonneville Salt Flats are perfect for speed. Every year, cars and motorcycles break land speed records on the flat expanse of the Bonneville Salt Flats. It’s been a tradition for more than a century, and racers have built a thriving...
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Only In Australia 2 - Surfing Duck
Surfing Duck:Experience the quacking adventure of a duck trying its luck at surfing, blending the worlds of water and feathers.
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Dissociate
To break apart an ionic compound into its constituent 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...
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Preservative
A substance that is added to a product in order to prevent decomposition or undesirable chemical changes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Neutralisation
The chemical process by which a base neutralises an acid, producing a salt and water. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Carbonate
A salt or other compound containing a carbonate ion CO32-. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
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Factpack: Elements, Compounds, Mixtures
Definitions and examples of three distinct chemical classifications: elements, compounds and mixtures. Chemistry - Atoms And Bonding - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic,...
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Electrolyte
A substance that when molten or dissolved in solution, releases free ions that make it electrically conductive A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Base (chemistry)
A substance that reacts with an acid to form a salt and water. 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...
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Hydrated compound
A solid compound that contains water molecules in a defined ratio. 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...
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Buoyancy: The Forces That Determine Why Objects Float or Sink
Discover the forces at work underwater, which dictate why large boats float but small pebbles sink. Physics - Forces - Learning Points. The buoyant force is an upward-acting force determined by the weight of the displaced water. Ships...
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The Elements: Chlorine
Find out why chlorine is used in swimming pools. Chemistry - Periodic Table - Learning Points. Chlorine is a yellow-green gas. At high concentrations, chlorine gas is poisonous. At lower concentrations, chlorine is used in cleaning...
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Salt: Food Preservative
Salt was discovered thousands of years ago as a way of preserving food. How does it do this? And what else does salt preserve? Chemistry - Chemical Industries - Learning Points. Food rots because of bacteria and fungi. Salt is an...
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The Elements: Sodium
Find out why sodium is highly reactive and highly useful! Chemistry - Periodic Table - Learning Points. Sodium is a highly reactive metal. Sodium is so reactive, it cannot exist naturally in its pure state. Sodium is found in salt, soap...
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The Elements: Potassium
Potassium is one of the most unpredictable elements, a soft metal that is essential to life. Chemistry - Periodic Table - Learning Points. Potassium is a soft metal. In our bodies potassium compounds help keep us healthy. Potassium...
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How We Taste
Taste is a survival instinct: we instinctively dislike bitter or sour tastes in case food is off or poisonous. An introduction to the tongue and how it helps us to taste. Biology - Being Human - Learning Points. Taste is a survival...
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Kidneys
Learn about how the kidneys function, regulate the salt levels in our bodies, filter our blood, and ultimately keep us alive. Biology - Human Body - Learning Points. The kidneys are located just below the ribs - one on each side of the...
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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...