Explain why the coin is able to float on top of the water in this glass.

Subject : Chemistry

Question:

“Explain why the coin is able to float on top of the water in this glass.”

Expert Verified Solution:

The coin floats on top of the water due to a phenomenon called surface tension. Water molecules are attracted to each other, creating a cohesive force at the surface, which acts like a “skin.” When the coin is placed carefully, the surface tension can be strong enough to hold the coin, preventing it from sinking. If the coin is too heavy or the surface tension is disrupted (e.g., by adding soap), the coin will sink.

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