Ice floats on water because:
Correct answer: C. Low density
- A. Its structure is similar to diamond
- B. High density
- C. Low density
- D. None
Explanation
Normally, when a substance freezes, it becomes denser. This is because the molecules slow down and pack closer together. However, water is an exception to this rule. When water freezes, it expands and becomes less dense. This is because the molecules form a hexagonal crystal structure, which takes up more space than the molecules in liquid water. The reason why ice floats on water is because it is less dense than liquid water. This means that ice will always rise to the surface of water.
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About Anomalous Behaviour of Water
Water expands when cooled below 4°C and when it freezes, giving liquid water its maximum density at 4°C. The explanation depends on hydrogen bonding and the open structure of ice, which makes ice less dense than water and allows it to float.
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