Thames & Kosmos Chemistry C500 (Version 2.0) handleiding

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Handleiding

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This time, the
foam stays
YOU WILL NEED
→ test tube
→ stopper
→ tartaric acid solution
→ liquid soap or shower gel
→ cup of water
HERE’S HOW
1. Place 1 or 2 drops of liquid soap in a test
tube filled with 5 cm of water, insert the
stopper, and shake until some foam
forms.
2. Add some of the tartaric acid solution
from Experiment 17 to the soap
solution.
What happens to the foam?
Safety Note: For tartaric acid, note the “Information
about hazardous substances” on page 7!
1
2
The foam remains, and no crumbly sub-
stance appears. The reason? The acids
contained in modern liquid soaps, unlike
fatty acids, are water-soluble. So they
won’t separate out when you add an
acid.
5 CM
WATER
TARTARIC ACID
SOLUTION
WHAT’S HAPPENING?
Soap or Body Wash | 33
EXPERIMENT 18

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Productinformatie

MerkThames & Kosmos
ModelChemistry C500 (Version 2.0)
CategorieNiet gecategoriseerd
TaalNederlands
Grootte25520 MB