Thames & Kosmos Glowing Chemistry handleiding

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Thames & Kosmos

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Handleiding

EXPERIMENT 22

Beaming smiley face

Technically, a smiley face just smiles. Our

smiley, by contrast, will positively beam

with joy.

YOU WILL NEED

› Safety goggles

› Luminol

› Sodium carbonate

› Potassium hexacyanoferrate(III)

› 2 Test tubes

› Double-headed measuring spoon

› Stirring stick

› Pipette

› Petri dish

› Hydrogen peroxide

› Dish soap

HERE’S HOW

1. Add 2 large measuring spoons of sodium

carbonate to a test tube and drip about 20

drops of water into the test tube with the

pipette. Stir with the double-headed

measuring spoon to get a thick paste.

2. Use this paste to paint the eyes, nose, and

mouth of a smiley face. Let the face dry.

3. Now add a drop of dish soap, a small spoon

of luminol, and a small spoon of potassium

hexacyanoferrate(III) to the second test tube.

Half-fill the test tube with hydrogen peroxide

and stir until everything is dissolved. Your

glow solution is now ready.

Glow Solution

20 x Water

2x Sodium carbonate

Hydrogen

peroxide

Luminol

Potassium hexa-

cyanoferrate(III)

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