Thames & Kosmos Candy Chemistry handleiding

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Thames & Kosmos

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Handleiding

HERES HOW

1. Prepare the jar setup by tying a string

around the middle of the pencil or

skewer. When the pencil is placed across

the top of the jar, the string should hang

down into the jar but not touch the

bottom of the jar.

2. Wet the string and roll it in some of the

granulated sugar. Let it dry. The string

should be coated with sugar crystals.

3. Put 2 cups of water and 4 cups of sugar

into the pot. Bring this solution to a boil.

4. When all of the sugar has dissolved into

the water, remove it from the heat and

pour it into the jar.

5. Gently place the string in the solution.

Cover the jar with plastic wrap.

6. Leave the jar in a spot where it will not

be disturbed. After a day, you should see

some small crystals on the string. For

large crystals, wait a week or longer.

Rock candy

YOU WILL NEED

→ cooking pot

→ metal spoon

→ large glass canning jar

→ pencil or wooden skewer

→ kitchen string

→ plastic wrap

→ 2 cups of water

→ 4 cups of granulated sugar

→ food coloring

You made a supersaturated solution of

sugar and water. Over time, the sugar

crystallized out of the solution, adhering

to the small starter crystals on the string

and forming into larger crystals.

→

WHATS HAPPENING

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

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Safety Note:

Caution! High

temperatures. There is a

risk of burns.



EXPERIMENT 

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