Thames & Kosmos Glowing Chemistry handleiding

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Thames & Kosmos

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Handleiding

EXPERIMENT 17

Illuminated shape

Every one of the chemicals used in the solution

has a role to play, and all have to be present

for the luminescence to work. But the order in

which they are added makes no difference, as

this experiment will show.

YOU WILL NEED

› Safety goggles

› Luminol

› Sodium carbonate

› Potassium hexacyanoferrate(III)

› Test tube

› Small measuring cup

› Pipette

› Petri dish

› Double-headed measuring spoon

› Hydrogen peroxide

› Coffee filter or paper towel

› Scissors

HERE’S HOW

1. Cut a shape such as a star or an animal out of

a coffee filter or paper towel. It has to be

small enough to fit into the Petri dish.

2. Dissolve a small measuring spoon of

potassium hexacyanoferrate(III) in about 5

milliliters of warm water.

3. Place the shape in the lid of the Petri dish,

drip potassium hexacyanoferrate(III) solution

onto it until the entire shape is fully

saturated, and then let it dry (optionally on a

warm heater). Repeat this twice.

Potassium

hexacyanoferrate(III)

Lid

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