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Chemistry

Freezing Lemonade in front of your eyes

Sun, 15/08/2010 - 09:17 — mnd22
Freezing lemonade by lowering air pressure.
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Psychedelic Milk

Sat, 19/06/2010 - 20:17 — mnd22
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A little milk, a little food dye, a little washing-up liquid... and an amazing display of colour. See the stunning swirling effects from disrupting the surface tension.

See the amazing patterns made by food colouring and detergent in milk.
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Global warming and ozone layer

Fri, 12/02/2010 - 23:59 — dmb52
Explaining some of the key fetures of todays climate.
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Thixotropic sand and fluidised bed

Fri, 12/02/2010 - 23:51 — dmb52
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Find out more about quicksand and how sand can behave like a fluid.

Looking at floating and sinking using a bed of sand
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Water, Oil, and Ice

Fri, 12/02/2010 - 23:42 — dmb52
Watching coloured ice melt and sink through castor oil.
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Locusts and Glowsticks

Fri, 12/02/2010 - 23:36 — dmb52
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What do glowsticks and locusts have in common? Watch what happens as we heat them up and cool them down - how long can you get your glowstick to glow? How fast can you make the locusts move?

Using glow sticks to talk about chemical kinetics.
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Sodium Acetate

Fri, 12/02/2010 - 23:18 — dmb52
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Find out about how handwarmers work, and see solid crystals form in seconds right infront of your eyes.

Rapid crystal growth from sodium acetate.
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Fire Extinguishers

Fri, 12/02/2010 - 23:00 — dmb52
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What does a fire need to burn, and how can we put it out? Find out how we can put out a candle with a cupful of gas!

Demonstrating the power of a carbon dioxide fire extinguisher.
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Giant bubbles

Fri, 12/02/2010 - 22:49 — dmb52
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I'm forever blowing bubbles... but why aren't any of them square? Can you make a square bubble? Come and have a go...

Making giant soap bubbles and looking at how they behave in different shaped frames.
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Red cabbage

Fri, 12/02/2010 - 22:41 — dmb52
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We use a little red cabbage juice to find out more about acids and bases in the world around us.

Making a natural pH indicator.
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