Thames & Kosmos Chemistry C500 (Version 2.0) handleiding

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Thames & Kosmos

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Handleiding

Litmus solution

YOU WILL NEED

→ test tube

→ measuring spoon

→ stopper

→ pipette

→ bottle with safety cap

→ litmus powder

→ denatured alcohol

→ cup of water

HERE’S HOW

1. Measure 3 small spoonfuls of litmus

powder into a test tube ﬁlled with 3 cm

of water.

2. Seal the test tube with the stopper,

shake, and let the sealed test tube sit for

1 day in a location where it will be out of

the reach of young children.

3. Now carefully and slowly pour the deep

blue solution into the brown bottle. Do

not stir up the insoluble dark residue in

the test tube. Throw it into the

household garbage. Half a pipette of

denatured alcohol added to the solution

will make it keep longer — ask your

parents to take care of this part for you.

4. Now put the safety cap with the dropper

insert onto the bottle and close it. You

can securely open and re-close the

litmus solution container by

simultaneously turning and pushing.

Have an adult help you with this.

LITMUS

POWDER

3 CM

DENATURED

ALCOHOL

TO OPEN TO CLOSE

Warnings for denatured alcohol:

Highly ﬂammable liquid and vapor. Keep away from

heat/sparks/open ﬂames/hot surfaces. – No smoking. –

Keep container tightly closed.

Request to parents: Keep the denatured alcohol

locked away, and add the alcohol to the litmus solution

yourself.

EXPERIMENT 5

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