molecular polarity applications in our daily lives
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Polarity and molecular shape play a vital role in determining the physical properties of various compounds and molecules. Polar molecules, containing polar bonds due to the differences in the electronegativity of bonded atoms, possess different surface tension, melting and boiling point, solubility and so on. Water is a universal solvent which dissolves almost every polar compounds and molecules. When any substance, say polar in nature is dissolved in water, the negatives ends get attracted towards positive end of the water molecule and vice-versa. This leads the molecules to dissolve in water. It is due to the polarity of water molecule that gives water a high surface tension. Insects and small creatures take advantage of this and walk and float easily. Water has also high heat capacity which helps bathing and swimming refreshing in the hot summer day.
Molecular shape also affects various physical properties of substance. If water molecule were linear in nature, then it would be non- polar in nature and we would not be able to see what we see otherwise. Linear molecules have high melting and boiling points compared to bent and angular molecules.
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