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Warning--you'll really have blood (okay, fake blood) on your hands with this experiment. But you
will have a frighteningly good time!
You'll need:
- a bar of soap
- 2 or 3 laxative pills, such as Ex-Lax
- 1 tablespoon of rubbing alcohol
- small jar
What to do:
- In a small jar, crush one or two pieces of Ex-Lax and add a tablespoon of rubbing alcohol
- Rub some of the mixture on your hand and allow it to dry. Then wash it off with soap.
What happens:
The soapy water turns bright red!
Why this happens:
The laxative contains a substance called phenolphthalein, which turns bright red when it mixes with
an alkali (also known as a base) like soap. Soap is made from boiling fat together with a strong
alkali. By adding water you free some of the alkali, which is then free to mix with the
phenolphthalein on your hand. of aging, harsh weather conditions, and pollution have turned the
Statue of Liberty into the green color we see today.
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