Thames & Kosmos Hot Ice Crystals handleiding

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Thames & Kosmos

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Handleiding

Carefully pour the cooled solution

over the remaining crystals in

the petri dish, and watch as a

column gradually grows. Can you

also get it to grow to the side?

4. Pouring colorful

crystal columns

CRYSTAL TOWERS,

FLOWERS, & CASTLES

PART

You will need:

1 packet crystal salt (sodium acetate),

wooden spatula, petri dish, blue dye,

clean jelly jar with lid, distilled water,

pot, trivet, and pot-holder, scissors,

paper label, pencil and tape

Here’s how:

Measure 4 mL of water and stir

a few granules of blue dye into

the water. Then pour the colored

water into an empty jelly jar.

Add 1 packet of crystal salt. Save a

few seed crystals in the petri dish

for later.

Make a crystal salt solution in

a water bath as described in

Experiment 1. The dye might

change color in the process.

Pour the solution into a clean,

labeled measuring cup and

let the cup sit overnight in an

undisturbed location with a jelly

jar lid on top.

GEEK

OUT!

WHAT’S

HAPPENING?

If you slowly pour the colored

liquid over the remaining crystals

in the petri dish, the solution

quickly crystallizes out again. Soon

you will see a column of crystals

rising up. The color shows you

that the water of crystallization is

integrated back into the crystals —

along with the dye.

Krystal

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