Curated Video
Screaming Jelly Baby
We add a jelly baby to a boiling tube containing potassium chlorate. When the chemicals react, gas is rapidly produced. The screaming sound is created as the gas escapes from the tube. The sweet burns brightly as the reaction occurs....
Curated Video
Acidification of Water
We use a drinking straw, some water and universal indicator to show that breathing out creates acid. Universal indicator is added to the water to show its pH value. When we blow into the water the indicator changes colour showing that...
Curated Video
Aerobic Respiration: Observing Oxygen Use in Maggots
We use maggots to let us observe aerobic respiration. The maggots are placed over sodium hydroxide in a specimen tube. A bung and delivery tube are attached to the specimen tube that feed into a boiling tube of coloured water. In the...
Curated Video
Cola Volcano
We add mints to diet cola in order to produce a fountain. When we add the mints to the diet cola, the porous surface of the mint causes the carbon dioxide trapped within the drink to be released rapidly, resulting in a cola volcano....
Curated Video
Dry Ice and Magnesium
We use magnesium and blocks of dry ice to show how a redox reaction occurs. A cavity in a block of dry ice is filled with coils of magnesium ribbon, which are set alight. A second block is then placed on top, but instead of this putting...
Curated Video
Inflating Glove
We inflate a rubber glove using the gas produced during a neutralisation reaction. Bicarbonate of soda is added to vinegar in a beaker covered by a rubber glove and it expands. The gas is used to extinguish a flame, showing that it is...
Curated Video
Fire Extinguisher Sublimation
We release carbon dioxide from a fire extinguisher against a dark cloth to see what happens. The expanding gas cools as it leaves the extinguisher, forming a visible dry ice solid on the cloth. As it warms, the carbon dioxide vanishes...
Curated Video
Redox Reactions
For centuries, humans have been extracting metals from molten ores. Today, the basic technique remains the same, but how does extraction work? Chemistry - Reactions - Learning Points. Metals can be extracted from rocks if they are heated...
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Natural Climate Change
Ice cores taken from deep within the Earth's polar regions hold a hidden secret: the historical record of the Earth's climate. Earth Science - Human Impacts - Learning Points. Evidence of natural climate changes can be found in...
Curated Video
Fermentation: The Chemical Process Behind Everyday Foods
Discover the chemical process which produces some of our most common foodstuffs, from bread to yoghurt, to wine and vinegar. Chemistry - Chemical Industries - Learning Points. Fermentation is the process of converting sugar and other...
Curated Video
Carbon Trading
International governments have put caps in place to limit carbon dioxide emissions from industry. What are emissions caps and will they solve the problem? Human Geography - A Changing World - Learning Points. The percentage of carbon...
Curated Video
Aorta
The biggest artery in the body. 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...
Curated Video
Chemical reactions – What happens next?
Vinegar is added to bicarbonate of soda ... what happens next? Material processes - Changing materials - Chemical reactions A Twig Tidbit Film - What happens next? A short section of film is played and the children have to guess what...
Curated Video
Characteristics of air – Spot the...
Six gas molecules are shown on screen ... can you spot the molecules that make up air? Material processes - Solids, liquids and gases - Characteristics of air Learning Points Oxygen, carbon dioxide, nitrogen and helium are molecules...
Curated Video
The energy debate – True or false
True or false ... Biofuels don't release carbon dioxide when burnt? People and places - Future of energy - The energy debate Learning Points Biofuels release carbon dioxide, but are a carbon neutral energy source. A Twig Tidbit Film -...
Curated Video
Excretion – Odd one out
Four waste products are shown, but which is the odd one out? Life processes - Living processes - Excretion A Twig Tidbit Film - Odd one out. The children have to work out which of four images is the odd one out.
Curated Video
The energy debate – Did you know?
Did you know that greenhouse gases in the atmosphere prevent heat from escaping? People and places - Future of energy - The energy debate Learning Points Carbon dioxide is a greenhouse gas. A Twig Tidbit Film - Did you know? A...
Curated Video
The Amazon rainforest
Find out how deforestation in the Amazon rainforest affects the whole planet, and what is being done to stop it disappearing completely. People and places - Human impact on the environment - Humans on Earth Learning Points Deforestation...
Curated Video
You are one big chemical reaction
Did you know you are one big walking talking chemical reaction? Material processes - Changing materials - Chemical reactions Learning Points Chemical reactions happen inside the human body. Respiration is a chemical reaction that...
Curated Video
What is air?
You may not think about it much, but air is everywhere and it is essential to life. Material processes - Solids, liquids and gases - Characteristics of air Learning Points Air is a mixture of gases including nitrogen and oxygen. Air...
Curated Video
Smog - Air Pollution
Find out how harmful gases in the air can react together to create smog ... a form of air pollution. People and places - Human impact on the environment - Polluting the air Learning Points Smog is a mixture of harmful gases that react...
Curated Video
The Carbon Family - Reducing Emissions
Meet the Carbon family and discover why reducing our carbon emissions will help stop global warming. People and places -Future of energy - The future of energy Learning Points Making small changes at home can reduce carbon emissions. We...
Curated Video
Volcanic eruptions
Erupting volcanoes are a captivating example of materials changing state. Material processes - Solids, liquids and gases - Changes of state Learning Points Molten rock underground is called magma. Molten rock on the surface of the Earth...
Curated Video
The Heart - Circulatory System
Explanation of the circulatory system. Life processes - Body systems - The circulatory system Learning Points The heart is a strong muscle that pumps blood throughout the body. Arteries and veins carry blood around the body. A Twig...