NEET > Chemistry Class 11 > Structure of Water & Ice
Structure of Water & Ice Video Lecture - Chemistry Class 11 - NEET
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FAQs on Structure of Water & Ice Video Lecture - Chemistry Class 11 - NEET
| 1. What is the structure of water? |  |
Ans. Water has a bent molecular structure due to its two hydrogen atoms bonded to a central oxygen atom. This arrangement results in a slight positive charge on the hydrogen atoms and a slight negative charge on the oxygen atom, creating a polar molecule.
| 2. How does the structure of water contribute to its unique properties? | |
Ans. The structure of water gives rise to its unique properties. The polar nature of water molecules allows for hydrogen bonding, which leads to high cohesion, surface tension, and the ability to dissolve many substances. Additionally, the bent structure of water allows for efficient packing in the solid state, resulting in ice being less dense than liquid water.
| 3. What happens to the structure of water when it freezes into ice? | |
Ans. When water freezes into ice, the water molecules arrange themselves in a hexagonal lattice structure. Each water molecule forms hydrogen bonds with its neighboring molecules, creating a more stable and organized arrangement compared to the random orientation in liquid water.
| 4. Why is ice less dense than liquid water? | |
Ans. Ice is less dense than liquid water due to its unique structure. When water freezes, the hydrogen bonds hold the water molecules in a more open arrangement, causing the ice to expand and become less dense. This expansion is why ice floats on liquid water.
| 5. How does the structure of ice affect its physical properties? | |
Ans. The structure of ice affects its physical properties in several ways. The hexagonal lattice structure of ice leads to a rigid and crystalline solid. It also results in ice being less compressible and having a lower thermal conductivity compared to liquid water. These properties of ice make it an excellent insulator and contribute to its role in regulating Earth's climate.
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Video Description: Structure of Water & Ice for NEET 2023 is part of Chemistry Class 11 preparation.
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