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Answer:
The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling. A water molecule is slightly charged on both ends. This is because oxygen is more electronegative than hydrogen. The stream of water bends due to the polarity of water molecules.
All the properties of water are related to one another by the polar nature that is caused by the partial electronegativity difference of the hydrogen and oxygen molecules of water molecules.
A water molecule has uneven distribution of charges between different atoms of the different molecules. All types of properties of water due to attractions between these polar molecules.
- in water molecules slightly negative atoms of one molecule are attracted to the slightly positive atoms of other molecules
- the attraction forms hydrogen bonding, weak bonds between a hydrogen atom and another atom
Properties of water due to polarity and hydrogen bonds:
- surface tension - a measure of the force necessary to stretch or break the surface of a liquid
- capillary action - the tendency of water to rise in a thin tube
- cohesion - water attracted to other water molecules
- adhesion - Water attracted to other materials
- high specific heat - the amount of the heat that must be absorbed or lost for one gram of the substance to change its temperature by 1°C
- expansion upon freezing - ice is less dense than and on freezing it expands its structure and forms a cage-like structure.
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