Curated Video
The Elements: Copper
Copper has been used by man for thousands of years. Chemistry - Periodic Table - Learning Points. Copper is a malleable metal. Copper is extracted from ore. Copper is a good conductor of electricity and heat. Copper helps to keep the...
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Isotopic mass
The mass of 1 atom of a specific isotope of an element. 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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Displacement reaction
A reaction in which a more reactive element replaces a less reactive element in a compound. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
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...
Curated Video
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...
Curated Video
Alloys
What exactly are alloys? What is it about their properties that make them so useful for a huge variety of purposes, from construction to jewellery? Chemistry - Periodic Table - Learning Points. Alloys are metals mixed with other...
Curated Video
Flame Colours and Fireworks
Exploring the science behind fireworks, discover how different elements are used to produce different colours of fireworks. Chemistry - Atoms And Bonding - Learning Points. In the mid-19th century the inventor if the Bunsen burner,...
Curated Video
Reactivity Series: Reactive Metals
The discovery and uses of reactive metals throughout history, and how their uses have defined the period in which they were discovered. Chemistry - Periodic Table - Learning Points. The reactivity series ranks the chemical reactivity of...
Curated Video
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...
Curated Video
Making an Electromagnet
We create a simple electromagnet by coiling wire around a nail and passing current through it. The magnetic field around the electromagnet creates similar patterns in iron fillings to a permanent magnet. Physics - Electricity And...
Curated Video
Ingenhousz's Heat Conductors
We use a metal box holding rods of different materials to test their ability to conduct heat. The box is filled with boiling water and a paperclip is attached to the end of each rod using petroleum jelly. As the heat moves through the...
Curated Video
Citrus Fruit Battery
We use lemons and strips of zinc and copper to make a battery. First, strips of copper and zinc are added to one lemon and they are connected across a voltmeter. This is repeated, this time with more lemons and metal plates, until a...
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Metal Extraction
We extract copper metal from copper chloride solution using electrolysis. The electric current causes copper to form at one electrode and chlorine gas to form at the other. The presence of chlorine is tested using blue litmus paper....
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Flame Test
We use a Bunsen burner to burn different chemical salts to see how the flame colour changes. This shows that sodium burns with a yellow flame, lithium burns with a red flame, barium burns with a yellow-green flame and copper burns with a...
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What is an Atom?
From our bodies to the oceans and stars, everything is made of millions upon millions of tiny atoms. But what are atoms made of? Chemistry - Atoms And Bonding - Learning Points. The building blocks of all elements are called atoms. Atoms...
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Ion Migration
We separate the ions in copper dichromate gel using electrolysis. We see the positive blue copper ions move to the negative electrode and the negative yellow chromate ions move to the positive electrode. Chemistry - Reactions - Learning...
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Silver Tree
We demonstrate a displacement reaction using silver nitrate and copper. A tree-shaped piece of copper is submerged in silver nitrate solution. The silver ions displace the copper and the tree slowly becomes coated with silver metal. At...
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Conductors and dangers of electricity – Odd one out
Four different materials are shown, but which is the odd one out? Physical processes - Electricity and magnetism - Conductors and dangers of electricity A Twig Tidbit Film - Odd one out. The children have to work out which of four images...
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Expansion and conduction – Odd one out
Four substances are shown on screen, but which is the odd one out and is not a good conductor of heat? Material processes - Changing materials - Expansion and conduction Learning Points Metals are good thermal conductors due to their...
Curated Video
Why is the Statue of Liberty green?
Did you know that the Statue of Liberty hasn't always been green? Material processes - Changing materials - Chemical reactions Learning Points Chemical reactions produce new substances. Chemical changes always involve two or more...
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Conductors and insulators
Find out what the difference is between a conductor and an insulator. Physical processes - Electricity and magnetism - Conductors and dangers of electricity Learning Points Conductors are materials that allow the flow of electricity....
Wonderscape
The Environmental and Human Costs of Industrial Cobalt Mining in the DRC
Delve into the complexities of cobalt mining in the Democratic Republic of the Congo (DRC), where industrial and artisanal mining intersect. Learn about the environmental damage, displacement of communities, and health risks associated...
Wonderscape
Paul Revere: Life During and After the Revolutionary War
This video examines Paul Revere’s contributions during and after the Revolutionary War. From his efforts in printing money and supplying ammunition to his post-war ventures in hardware, bell-making, and copper production, Revere played a...