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What the heck is an ELEMENT in chemistry?
In chemistry, we usually talk about atoms and molecules. When we introduce the term 'element', things get a little confusing. In this video, we will cover what an element is in chemistry and give you some examples.
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Myoglobin
A protein found in muscle tissue that performs a similar role to haemoglobin in the blood, as a carrier of oxygen that releases it to cells when required A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...
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Nuclear fusion
A nuclear reaction in which two atomic nuclei fuse to form a larger one. 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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Reduction
Any chemical reaction in which oxygen is removed from a substance. 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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Extraction
The process of deriving metals from their naturally-occurring ores. 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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Corrosion
Commonly called rusting, the degrading of the exposed surface of materials, in particular metals. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
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Ore
A type of rock containing minerals from which a useful substance can be extracted. 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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Mercury
Where does Mercury fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Mercury is the smallest planet in our Solar System. Mercury is the closest planet to the Sun. Mercury has the...
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Factpack: How to Make a Human
Revealing the elements which make up the human body, and their relative abundance. Chemistry - Periodic Table - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic, or use to grab attention...
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Transition element
Any of the metallic elements from the central block of the periodic table. 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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Mineral (biology)
An inorganic chemical element necessary for human growth and health, such as iron, sodium, potassium, or magnesium. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
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First Synthetic Pigment
The story of how a contaminated reaction in the early 1700s led to the accidental discovery of blue pigment, the first synthetic paint. Chemistry - Reactions - Learning Points. In the 1700s, paints were colored using naturally occurring...
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The Elements: Iron
Iron is crucial in many areas of life: it is found in our blood, as well as being used to build bridges. Chemistry - Periodic Table - Learning Points. Iron is one of the most common element on Earth. Iron is found in living organisms....
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Why is Blood Red?
What is it in our blood that makes it red, and why are other animals different? Biology - Human Body - Learning Points. Haemoglobin is the most efficient oxygen carrier and provides the red pigment in blood. Not all animals have red...
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What Are Electromagnets?
How do electromagnets differ from permanent magnets, and what are they used for? Physics - Electricity And Circuits - Learning Points. An electromagnet is created by running an electrical current through a coil of wire. An electromagnet...
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Oxygen and Combustion
Combustion reactions are vital: from keeping us warm and cooking our food, to providing electricity and propelling rockets into outer space. What do we know about these chemical reactions? Chemistry - Reactions - Learning Points....
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Oxidation Reactions
Why do we cook our food wrapped in aluminium foil? Why does metal rust? It all comes down to oxidation reactions. Discover what happens to cause these reactions, and how to stop them. Chemistry - ReactionsLearning Points. The combustion...
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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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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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Malnutrition
Malnutrition is the biggest risk to health worldwide. It has become a common problem in the developing world. What is it and how does it develop? Biology - Healthy Living - Malnutrition is a chronic lack of nutrients. Malnutrition is the...
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Metals in Medicine
Metals are used in the human body for a wide range of medical purposes. Discover which metals are used and what properties they have that can help to heal us. Chemistry - Periodic Table - Learning Points. Titanium, stainless steel and...
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Balanced Diet - Nutrition Essentials
Discover which foods are vital for a healthy diet. What should you be eating, how much, and why? Biology - Healthy Living - Learning Points. You need a balanced diet to be healthy. A balanced diet is varied and contains different amounts...
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Transition Metals
Transition metals are the largest group in the periodic table. Find out what similarities they share, and how we make use of these metals. Chemistry - Periodic Table - Learning Points. Transition metals are found as a block in the middle...
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Rusting Nails
We investigate the conditions needed for rust to form. Four iron nails are placed under different conditions. One is half submerged in water. Another is completely submerged in boiled water. One is half submerged in salt water. The final...