melting point of ice is
Correct answer: B. decreases with increasing pressure
- A. increases with increasing pressure
- B. decreases with increasing pressure
- C. is independent of pressure
- D. is proportional to pressure
Explanation
Ice, unlike most substances, contracts upon melting. When pressure is applied to ice, it forces the molecules closer together, making it easier for them to form the more compact structure of liquid water. This decrease in volume and rearrangement of molecules makes it easier for the ice to melt at lower temperatures when pressure is increased
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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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