RESEARCH METHODOLOGY

STATISTICAL TECHNIQUES AND TOOLS

STANDARD ERROR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Water is considered a ____ molecule, because it has positively and negatively charged regions.
A
intermolecular
B
nonpolar
C
polar
D
dense
Explanation: 

Detailed explanation-1: -The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles-a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).

Detailed explanation-2: -Water molecules attract each other due to polarity. Polarity: Although the net charge of a water molecule is zero, water is polar because of its shape. The hydrogen ends of the molecule are positive and the oxygen end is negative. This causes water molecules to attract each other and other polar molecules.

Detailed explanation-3: -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).

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