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1. Why is H2O a polar molecule?

 

It will freeze at polar temperatures

Since Hydrogen is polar and so is Oxygen, then the combination is also polar

The Oxygen bonds with the Hydrogen electrons, causing the (+) Hydrogen nucleus to be exposed at one end

 

2. Why don't the electrons give a non-polar molecule charges at their ends?

 

Charges from the protons cancel out charges from the electrons

Non-polar molecules don't have ends

Electrons don't have any charge

 

3. What happens if you mix two liquids, where each consists of polar molecules, and the liquids don't react chemically?

 

The combination turns to a solid substance

The combination becomes a solution

Such liquids will not mix

 

http://www.school-for-champions.com/science/chempolar.htm

 

 

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