24
QuizMultiple Choice

Intermolecular Forces — Unit test

Question 24 • *26-27 CFISD TX-Chemistry A CR

When applied to a dish, soap makes grease soluble in water. Which explanation correctly supports the role of intermolecular forces in this common observation?

Answer
A
The nonpolar end of a soap molecule attaches itself to grease.
B
The nonpolar end of a soap molecule attaches itself to water.
C
The polar soap molecule attaches itself to the dish.
D
The polar soap molecule attaches itself to a nonpolar soap molecule.

Explanation

Grease is nonpolar, so it interacts favorably with the nonpolar end of a soap molecule. The soap’s polar end interacts with water, allowing the soap to surround and carry grease into the water. Thus, the nonpolar end attaches to grease, as choice A states.

AI-written and checked against the verified answer.

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