Thames & Kosmos Chemistry C500 (Version 2.0) handleiding
Handleiding
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Soap turns it blue
YOU WILL NEED
→ test tube
→ stopper
→ pipette
→ litmus solution
→ knife
→ bar of soap
→ cup of white vinegar
→ cup of water
HERE’S HOW
1. Use a knife to scrape a few shavings off
a piece of soap, and shake the shavings
together with 5 cm of water in a test
tube.
2. Add the soap solution to the rest of the
red litmus solution from Experiment 8.
What do you see?
3. Now, use the pipette to add a few drops
of vinegar to this solution.
1
2
3
3–4
x
VINEGAR
Soapy water, just like solutions of many
washing and cleaning agents, behaves
similarly to sodium carbonate: some
sodium hydroxide or soda lye is created
when the soap is dissolved. It’s this
sodium hydroxide that is responsible for
the blue coloring of the red litmus
solution. You can use a little vinegar to
change it back, though.
5 CM
WATER
LITMUS SOLUTION
FROM EXPERIMENT 8
→
WHAT’S HAPPENING?
20
EXPERIMENT 9
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Chemistry C500 (Version 2.0) |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 25520 MB |
