Unit 10 · Materials Used in Daily Life

Bases and Salts

ScienceSubject
16 minEstimated read
Activity 10.5

Why are these three things bitter or astringent?

MethodWhen bathing, if the foam of the soap gets into the mouth it is astringent. Eating raw aloe vera is astringent. The vegetable made from bitter gourd is always bitter. Why might these things have become bitter or astringent? Discuss it in class and present your conclusion.
Safety noteNobody is being asked to put soap in their mouth on purpose. Answer this from soap that got there by accident while bathing, which has happened to everybody, and taste nothing deliberately.
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