Lava Lamp Experiment

I remember longing for a lava lamp as a teenager. Alongside the inflatable chair and Tom Cruise they were the height of cool.

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Imagine my delight when I stumbled across this very simple experiment. It mimics the mesmerising floating bubbles of a lava lamp, requires no special equipment, just a few regular household ingredients.

To create your own lava lamp you will need

An Empty Bottle

A Little Water

Some Sunflower Oil

A Few Drops of Food Colouring

An Alka Seltzer Tablet (crumbled into 5 or 6 small pieces)

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Method

Fill your bottle approximately a quarter full with water.

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Fill the rest of the bottle with the oil and wait for the liquids to separate.

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Add a few drops of food colouring.

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Drop in a little portion of the Alka Seltzer tablet and watch the coloured bubbles rise to the surface as the carbon dioxide is released from the tablet.

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Keep added bits of the tablet to keep your lava lamp bubbling.

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As this experiment includes an alka seltzer tablet, adult supervision is required.

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