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Polarity of Molecules

The document outlines the objectives of a lesson on molecular polarity, focusing on how to determine if a molecule is polar or nonpolar based on its structure and electronegativity. It explains the concepts of polar and nonpolar molecules, including the unequal sharing of electrons in polar molecules and the role of electronegativity. Additionally, it includes questions for students to assess their understanding of the topic.

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Novie Jane Hontiveros
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34 views31 pages

Polarity of Molecules

The document outlines the objectives of a lesson on molecular polarity, focusing on how to determine if a molecule is polar or nonpolar based on its structure and electronegativity. It explains the concepts of polar and nonpolar molecules, including the unequal sharing of electrons in polar molecules and the role of electronegativity. Additionally, it includes questions for students to assess their understanding of the topic.

Uploaded by

Novie Jane Hontiveros
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPTX, PDF, TXT or read online on Scribd
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POLARITY

OF
MOLECULES
OBJECTIVES:
At the end of the lesson, the students should be able to:

• Determine if a molecule is polar or nonpolar given its


structure.
• Compare the electronegativity of different elements.
Does water mix
with oil?
Oils and fats do not dissolve in water.

Dish washing liquid breaks the


bonds of atoms in oil.
POLARITY

Equal or unequal sharing


of electrons among the
atoms of a molecule.
POLAR NON - POLAR
NEUTRAL MOLECULE:

# OF PROTONS = # OF ELECTRONS
Non – Polar Molecules Polar Molecules
POLAR MOLECULE

• There is unequal or
asymmetrical distribution of
electrons among the atoms of a
molecule.
Molecular
Structure of
Oxygen

Valence Electron or
outermost electron
Oxygen needs 2 more
electron to become
stable
ELECTRONEGATIVITY

• Relative ability of an atom to


draw electrons in a bond toward
itself.

This concept was first introduced


by Linus Pauling in the early 19th
century.
NON - POLAR
MOLECULE
No partial charge
No dipole moment

equal ability to attract


Determining Polarity Based on
Electronegativity
A. Read the questions carefully. Write your answer in a
one whole sheet of paper.

1. How do you differentiate polar and nonpolar


molecules?
2. Why are charges in polar molecules only
“partial” charges?
B. Classify each molecule as polar or nonpolar.
MOLECULES POLAR OR NON-POLAR
1. Cl2
2. CH4
3. BeCl2
4. BrF5
5. H2S

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