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Insoluble
A substance that cannot dissolve. 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...
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Mantle
The middle portion of the Earth's interior, between the outer crust and the core. 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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Vaporise
To change, or cause something to change, into gas or vapour. 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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Melting point
The temperature at which a solid turns into a liquid. 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...
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Sublimation
When a solid changes directly into a gas, without passing through a liquid stage. 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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Solution
A homogeneous mixture of more than one substance, with the different particles evenly distributed throughout. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Precipitate
A solid that forms in a liquid 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 abstract concepts and key...
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Coke
A fuel produced by heating coal in the absence of air. 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...
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Mineral (chemistry)
A naturally occurring element or compound that has a crystalline form and has been produced by geological processes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Leaching
In agriculture, the loss of important nutrients from the soil, carried away when too much water flows through it. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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Filtration - Solid-Fluid Separation
The physical separation of a solid from a fluid carrier, either gas or liquid, by passing it through a medium that blocks particles above a certain size. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...
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Crystallisation
The formation of solid crystals from a solution, or a cooling liquid or gas. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Aerosol
A suspension of very fine liquid or solid particles in a gas. 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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Fluid
A substance that is able to flow freely. 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...
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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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Expansion and Contraction
Discover how different materials react to heat, and why this can be both useful and dangerous. Physics - Energy And Radioactivity - Learning Points. Temperature affects the size and shape of an object due to the expansion and contraction...
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Streamlined: Dolphins vs People
Discover the differences in evolutionary adaptation between dolphins and humans, which allow these marine mammals to move through water far more easily and efficiently than us. Physics - Forces - Learning Points. Dolphins can swim faster...
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Introduction to the Periodic Table
In 1869, Russian scientist Dmitri Mendeleev created the Periodic Table, ordering the naturally occurring elements by their structure and properties. His Periodic Table changed the course of Chemistry forever, and even predicted the...
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How Hot Is the Earth's Core?
Unreachable by man, scientists have developed a complex experiment to demonstrate the heat and pressure at the centre of the Earth. Earth Science - Geology - Learning Points. The Earth's core is a dense ball of iron and nickel. To...
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Changing States of Matter
Water can either be a solid, a liquid or a gas. How does matter change state? Chemistry - Atoms And Bonding - Learning Points. Ice, liquid water and steam all consist of exactly the same molecules. Evaporation occurs when the temperature...
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Forensics: Chromatography
Find out how chromatography can be used to create the chemical 'colour fingerprint' of a substance. What are the two chromatography methods and how are they used to solve crimes? Chemistry - Atoms And Bonding - Learning Points....
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Structure of the Earth
The land surface of the Earth accounts for 1% of its total volume. Travel from the core to Earth's surface, examining the layers that make up our planet. Earth Science - Geology - Learning Points. The Earth is made up of four layers. The...
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Intermolecular Forces
Discover the role played by intermolecular forces in changing the state of matter between solid, liquid and gas. Chemistry - Atoms And Bonding - Learning Points. Intermolecular forces are the attractive forces between molecules....
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Solutions
Why and how do substances dissolve? Discover what happens when you create a solution. Chemistry - Atoms And Bonding - Learning Points. A solution is the mixture formed when a solid dissolves in a liquid. A solvent is a liquid that can...