When two ice cubes are passed over each other, they unite to form one cube. This is due to:
Correct answer: C. Hydrogen bond formation
- A. Covalent attraction
- B. Ionic bond formation
- C. Hydrogen bond formation
- D. Metallic bond formation
Explanation
When two ice cubes are pressed against each other, the phenomenon of them uniting into one cube is due to the formation of hydrogen bonds. Ice is composed of water molecules held together by hydrogen bonds. When two ice cubes are brought into contact, the surface water molecules break and reform hydrogen bonds with molecules from the other cube. This results in the cubes adhering to each other and ultimately forming one larger ice cube. Therefore, option c is correct.
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About Hydrogen Bonding
Hydrogen bonding is the strong attraction between hydrogen attached to nitrogen, oxygen or fluorine and an electronegative atom in the same or another molecule. It explains unusual boiling points, viscosity, surface tension, water's properties and the difference between intermolecular and intramolecular hydrogen bonding.
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