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Powered by household baking powder, it surfaces and dives over and over again.
Sometimes the simplest experiments are the most impressive. Watch as the density of the sub changes causing it to float and sink in the water!
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This diving sub toy is a fantastic gift for curious kids and is part of a large range of science kits & resources. Use for engaging science at home or in the classroom!
This experiment is all about density & buoyancy.? You’ll notice that there is a small hole in the compartment where you place the baking soda. As the submarine sinks, the baking soda becomes wet which releases carbon dioxide gas. This is because baking soda contains both?baking soda (sodium bicarbonate) and a dry acid (tartaric acid). When water is added to a baking recipe, these two ingredients react to form bubbles of carbon dioxide gas.
This carbon dioxide gas creates just enough buoyancy for the submarine to rise again. The carbon dioxide gas is then released once the submarine surfaces, which then sends the submarine back underwater again to repeat the process! By itself, the plastic submarine is too dense to float on the water.
NaHCO3+ KHC4H4O6 > KNaC4H4O6 + H2O + CO2
Sodium bicarbonate + Tartaric Acid reacts to produce Potassium sodium tartrate, water and carbon dioxide.
In 1953, Benjamin and Harry Hirsch noticed that you could use baking powder to make small toy submarines to rise and fall in water. They sold this idea to the Kelloggs who in 1954 exchanged over a million diving subs in with consumers who had sent in 25c and one cereal boxtop.
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On behalf of Salamah College staff and students, we would like to say a big thank you for your kind effort and hard work. The experiments you put together were astonishing and engaging. Your energetic approach grasped the students’ attention and kept them engaged throughout the show. We highly appreciate you reaching out to our school. It was great meeting you. Thank you, Salamah College Team,
Just wanted to let you know that today’s ‘Little science big fun’ show with was amazing! The children were so engaged and the way Russell shared a variety of scientific concepts was great.
Many thanks for bringing such a high calibre show to St Vincent’s yesterday. Imogen was so knowledgeable and teachers spoke highly of her use of scientific language throughout the presentation. Truly appreciate the opportunity we were given. Lina – Principal.
I just wanted to send some feedback. We have now had our entire school participate in a virtual incursion by the company. Each one was absolutely fantastic and a highlight for the students. I wanted to give a special mention to Ben, he is such a fantastic and engaging presenter and I think he may now have a Middle Park PS fan club!
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