Curated Video
Enlace químico
Enlace entre átomos que permite la formación de compuestos químicos.
Twig - Química
Curated Video
Base (química)
Sustancia que reacciona con un ácido para formar una sal y agua.
Twig - Química
Curated Video
Base (biología)
En la doble hélice del ADN, los enlaces entre las dos hebras están formados por pares de unas moléculas mucho menores que se llaman bases.
Twig - Biología
Curated Video
Los ácidos y los álcalis (segunda parte)
Los álcalis y los ácidos pueden neutralizarse para numerosos y distintos fines. Por ejemplo, las reacciones de neutralización nos permiten respirar bajo el agua o que las indigestiones las llevemos de forma más aliviada
Twig -...
Curated Video
Difference between acids and bases. And why supervillains love them.
What is the difference between acids and bases? This is a commonly asked question in both chemistry and biology classes. In this video, we will go through the definition of acid and base, and why they are so important to us, and, uh,...
Astrum
What Can We Find on the Moon?
NASA's Lunar Reconnaissance Orbiter shows the Moon has some pretty unusual features!
Science ABC
What are Mutations and what are the different types of Mutations?
A mutation is a random change in the DNA. Mutations can be neutral, which means it does not cause a change in a trait of the organism, or it could cause a beneficial or a harmful mutation. There are a few different types of mutations -...
Science ABC
Can You See the Moon Landing Site with A Telescope?
Yes, it is theoretically possible to use telescopes to see if the moon landings were real, but practically no. It would take an incredibly powerful telescope to see signs of moon landings on the lunar surface, and even the best...
Science ABC
Why is a Circle 360 Degrees, Why Not a Simpler Number, like 100?
A circle is 360 degrees But have you ever thought why is a circle not a simpler number, like 10 degrees or 100 degrees? As it turns out 360 is actually a very good number. From a purely mathematical standpoint, a number like 10 or 100...
Curated Video
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...
Curated Video
Centre of Gravity: Weight Balance Point
The point from which the whole weight of an object appears to act. 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
Base (biology)
In the DNA double helix, the links between the two strands are formed by pairs of much smaller molecules called bases. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Acid
A compound which dissolves in water to form a solution with a pH of less than 7. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
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...
Curated Video
The Romans and Numerals
Though they were great engineers, the Romans were terrible mathematicians. They relied on the knowledge of their Greek slaves, and rather than developing maths, came up with one of the most awkward numerical notation systems known to...
Curated Video
Cubist Art
How Cubist artists used geometry to represent a form in its purest way using geometric shapes such as the cone, cylinder and sphere. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s...
Curated Video
Submarine Communication
We have sent messages around the world and into space, but communicating underwater remains a challenge. How and why do radio waves allow us to talk to submarines? Physics - Waves - Learning Points. Salt water absorbs sound waves making...
Curated Video
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...
Curated Video
Why Do We Count in Tens?
Find out why our metric system is based on the number ten. Is it the best number to count on? Or could the reason be more biological than mathematical? Maths - Number A Twig Math Film. Reinforce and extend the learning required by the...
Curated Video
The Richter Scale
Why the magnitude of earthquakes, measured on the Richter scale, increases so quickly – because the scale is logarithmic. Maths - Number A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three...
Curated Video
Building the Pyramids
The use of 3-4-5 triangles in creating uniform right-angles and angles of incline in the ancient Pyramids of Egypt. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s math films show...
Curated Video
The Incredible Strength of Ants
Why are tiny ants considered the strongest creatures in the world? An introduction to the square-cube law and why muscle mass (length3) will always outstrip strength (length2). Maths - Number A Twig Math Film....
Curated Video
Acids and Alkalis: Part 1
The properties of strong acids and alkalis can be extremely harmful. Where do we find them, and how can we tell how acidic or alkaline a substance is? Chemistry - Reactions - Learning Points. Bases neutralise acids, and if a base...