BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a molecule that has no charge on one end and either an overall negative or positive charge on the other end
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a molecule that has an overall positive charge on one end, as well as an overall positive charge on the other end
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a molecule that has an overall negative charge on one end, as well as an overall negative charge on the other end
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a molecule that has an overall positive charge on one end and an overall negative charge on the other end
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Detailed explanation-1: -Polar molecules are those that possess regions of positive and negative charge. Water is an example of a polar material. The type of bonds it has, when coupled with its shape, gives one end of the molecule a slight positive charge (the hydrogen end) and the other a slight negative charge (the oxygen end).
Detailed explanation-2: -Water is a “polar” molecule, meaning that there is an uneven distribution of electron density. Water has a partial negative charge ( ) near the oxygen atom due the unshared pairs of electrons, and partial positive charges ( ) near the hydrogen atoms.
Detailed explanation-3: -Water’s polarity allows it to dissolve other polar substances very easily. When a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa.
Detailed explanation-4: -Explanation: Water (H2O) is a polar molecule because the electrons of the hydrogen atoms get “pulled” towards the electrons of the oxygen atom. This makes a region of positive charge on the hydrogen atoms and the negative charge on the other end of the molecule, which is the oxygen atom.
Detailed explanation-5: -A polar molecule is a molecule containing polar bonds where the sum of all the bond’s dipole moments is not zero. Polar bonds form when there is a difference between the electronegativity values of the atoms participating in a bond.