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Molecules, compounds and types of chemical bonds
What is the difference between a molecule and a compound? What are the main types of chemical bonds? In this video, we will be answering those questions and more.
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Writing Formulas for Covalent Compounds
A covalent compound is formed when 2 nonmetals bond together. When we have a covalent compound we have to use a specific set of naming rules. The first rules is that the first element keeps its name. The second rule is that the second...
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Naming Covalent Compounds the EASY way | How to pass Chemistry
This videos will cover how to name covalent compounds. It is important to remember that we have to use prefixes when we name covalent compounds. Covalent bonds, or compounds, form between 2 nonmetals, or 2 anions. In a covalent bond the...
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How To Stop Your Poop From Killing Corals
Corals all over the world are threatened by warming ocean temperatures. But 30 years of data show that reefs off the Florida Keys could protect themselves from rising temperatures if they weren’t also dealing with nutrient pollution...
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Diatomic
Refers to molecules that contain only two atoms. 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...
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Non-flammable
A substance that is not readily ignited or rapidly burned is said to be non-flammable. 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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Denitrification
The process by which nitrate compounds in the soil are converted to free nitrogen in the atmosphere. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
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Atmosphere
A layer of gas surrounding a planet or star, held in place by gravity. 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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Aurora
Also known as the Northern or Southern Lights. Natural displays of light in the polar regions, clearly visible in the night sky. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and...
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Factpack: Atmospheric Gases
Discover the Earth's atmosphere: what it is and what it is made of? 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 at the start...
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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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Factpack: Digestion
Amazing facts about digestive organs. Find out what they are, how they work, and how some animals' are different. Biology - Human Body - Learning Points. A Twig FactPack Film. Open a discussion on what has been already learnt in a topic,...
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Non-metals
The non-metal elements are found to the right 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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Northern Lights and Solar Flares
A unique combination of sunspots, solar flares and magnetic fields combine to create a visual spectacle on Earth. But what are the forces at work? Physics - Our Solar System - Learning Points. Natural light displays known as Aurora...
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Why is the Sky Blue? - Sky Color Explained
The atmospheric composition of the sky affects the colours we see. From blue horizons to red sunsets, why do we see colours the way we do? Physics - Our Solar System - Learning Points. Light is made up of different wavelengths. Our...
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Gas Laws
The air we breathe is made up of a mixture of gases. Discover the invisible forces of gas at work around us. Physics - Forces - Learning Points. The air we breathe is made up of gases including nitrogen, oxygen and carbon dioxide. The...
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The Elements: Nitrogen
Find out why nitrogen is essential for life. Chemistry - Periodic Table - Learning Points. Nitrogen is found inside every organism on Earth. Nitrogen gas is very unreactive. Nitrogen gas is used as a food preservative. A Twig Context...
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Venus
Where does Venus fit into the Solar System and what makes this planet unique? Physics - Our Solar System - Learning Points. Venus is Earth's closest neighbour. Venus is the hottest planet in our Solar System. Venus spins in the opposite...
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The Sun - Our Star
Our Sun is a medium sized star, which creates the perfect conditions for life on Earth. What happens on the Sun and how do stars, including the Sun, live and die? Physics - Our Solar System - Learning Points. The Sun is 4.6 billion years...
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The Nitrogen Cycle
Nitrogen is integral to the production of protein and DNA. Discover how it is present on Earth in a constant cycle, and how nitrogen from the air enters the food chain. Biology - Ecosystems - Learning Points. The nitrogen cycle describes...
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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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Nitrates: Food Preservatives
Potassium nitrate is a natural substance found in your food, or in an exploding firework. What makes it so versatile? Chemistry - Chemical Industries - Learning Points. Potassium nitrate preserves our food and is a component of...
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Food Basics: Proteins
Proteins are at the root of virtually all bodily functions, from growth to metabolism to transporting oxygen around the body. Learn how your body makes or ingests all the protein you need. Chemistry - Chemical Industries - Learning...
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Smoking: The Damage
Find out more about the range of toxins in cigarettes and the serious damage they can cause to smoker's lungs. Biology - Human Body - Learning Points. Cigarette smoke damages the lungs. The chemicals in cigarettes irritate the lung...