Nonpolar and Polar Molecules - Science -11.pptx

Science

1. Polar Molecules 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).

2. Non-Polar Molecules A molecule which does not have the charges present at the end due to the reason that electrons are finely distributed and those which symmetrically cancel out each other are the non- polar molecules. In a solution, a polar molecule cannot be mixed with the non-polar molecule. Here are some facts about the nonpolar covalent bond. Takes place between two identical nonmetals Equal sharing of electrons between the two atoms Electronegativity difference between the atoms is 0 Nonpolar compounds dissolve in a nonpolar solvent Physical properties: The compounds are generally liquid or gas at room temperature

3. Property Used To Compare Polar Have positive and negative charge on atom They have electrical dipole movement There is charge separation They interact with other polar substance Non-Polar Don’t have a large charges on the attached They do not have any dipole movement There is no charge separation They do not interact with other polar substance.