BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As water freezes, it expands and its density decreases.
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As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
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As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
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As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
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Detailed explanation-1: -In ice crystals, their hydrogen bonds link them together like acrobats, stacked one on top of the other, with their arms and legs outstretched. This provides more space between the molecules in the crystal structure of ice than the molecules of liquid water. As a result, ice is less dense than the liquid form.
Detailed explanation-2: -Water expands when it freezes making it less dense than the water from which it freezes. In fact, its volume is a little over 9% greater (or density ca. 9% lower) than in the liquid state. For this reason, ice floats on the water (like an ice cube in a glass of water).
Detailed explanation-3: -When frozen, water molecules take a more defined shape and arrange themselves in six-sided crystalline structures. The crystalline arrangement is less dense than that of the molecules in liquid form which makes the ice less dense than the liquid water. When water freezes, the volume expands by approximately 9%.
Detailed explanation-4: -The ice float on water because its density is less than water. The density of ice is. 931 gm-cm-3 and the density of water is. 0 gm-cm-3 .
Detailed explanation-5: -Water density changes with temperature and salinity. When water freezes at 0°C, a rigid open lattice (like a web) of hydrogen-bonded molecules is formed. It is this open structure that makes ice less dense than liquid water. This is why icebergs float.