Soap molecules get along with everyone. One end likes water and the other likes oils and grease. So the soap brings the two together. Make a little soap to see how this works!
Languages: English
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Will It Float?
Why will diet pop float and regular won’t? And how can a microwave help us understand the mystical floating ability of Ivory® soap?
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Making Silk and Nylon
Silk has been a valuable fibre for over 5000 years. Nylon was developed as the modern synthetic substitute. It’s remarkably easy to create fibres of both!
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Bubbles Under Pressure
What causes bubbles to form in carbonated beverages? Obviously it’s carbon dioxide, but why do bubbles form rapidly (or even explosively!) sometimes, while other times the bubbles are under control?
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Burning Water
Make acetylene the old fashioned way – using carbide and water – and set the water on fire!
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Playing With Inertia
Inertia is the resistance to a change in motion – whether already moving or standing still. Here are some simple and fun examples!
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Three Types of Magnetism
Here are three types of magnetism that are easily demonstrated. Two are very weak and easily overlooked, but they become apparent under the right conditions.
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The Amazing Flowing/Non-flowing Fluid!
Cornstarch and water combine to make a marvellous substance that looks like runny goo until you apply pressure to it, at which point it turns stiff like bread dough. It’s a non-Newtonian vicsoelastic fluid!
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Simple DNA Extraction
Using simple materials and tools, extract visible strands of DNA from fruit cells.