LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Water is polar because ____
A
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
B
The molecule has two poles, at which the it is colder than other regions of the molecule.
C
The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
D
The water molecule is neutral.
Explanation: 

Detailed explanation-1: -Water (H2O) is polar because of the bent shape of the molecule. The shape means most of the negative charge from the oxygen on side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.

Detailed explanation-2: -Oxygen atoms are bigger than hydrogen atoms. Very simply, think of oxygen as a “bully” who keeps hydrogen’s single electron. As a result, the water molecule is “polar”, meaning the molecule has an unequal distribution of charge.

Detailed explanation-3: -Because oxygen is more electronegative-electron-greedy-than hydrogen, the Ostart text, O, end text atom hogs electrons and keeps them away from the Hstart text, H, end text atoms. This gives the oxygen end of the water molecule a partial negative charge, while the hydrogen end has a partial positive charge.

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