Chemistry
Grade-7
Easy
Question
Why do soap molecules work so well as cleaners?
- They are connected by a water-soluble ionic "head" and a grease-soluble non-polar "tail."
- A grease-soluble "head" is attached to a water-soluble "tail."
- A grease-soluble ionic "tail" is attached to a water-soluble non-polar "head" in these molecules.
- A grease-soluble "tail" is attached to a water-soluble "head."
Hint:
It has a tadpole like structure. One part is hydrophilic other is hydrophobic.
The correct answer is: They are connected by a water-soluble ionic "head" and a grease-soluble non-polar "tail."
- Soap molecules work so well as cleaners because they are connected by a water-soluble ionic "head" and a grease-soluble non-polar tail.
- Soap is a good cleaning agent because it acts as an emulsifier. Emulsifiers can disperse one liquid into another immiscible liquid. This means that oil (which attracts dirt) does not naturally mix with water, but soap can be suspended in a way that removes oil/dirt.
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