Unit 4-Molecular Polarity

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Chemistry
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11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is molecular polarity?
Back
Molecular polarity refers to the distribution of electrical charge over the atoms in a molecule, resulting in a molecule having a positive and a negative end.
2.
FLASHCARD QUESTION
Front
What determines if a molecule is polar or nonpolar?
Back
A molecule is polar if it has a net dipole moment due to the presence of polar bonds and an asymmetrical shape. It is nonpolar if it has no net dipole moment, often due to symmetrical shape or nonpolar bonds.
3.
FLASHCARD QUESTION
Front
What is a dipole moment?
Back
A dipole moment is a measure of the separation of positive and negative charges in a molecule, indicating the polarity of the molecule.
4.
FLASHCARD QUESTION
Front
What role do lone pairs play in molecular polarity?
Back
Lone pairs can affect the shape of a molecule and contribute to its polarity by creating regions of negative charge that influence the overall dipole moment.
5.
FLASHCARD QUESTION
Front
What is the VSEPR theory?
Back
The Valence Shell Electron Pair Repulsion (VSEPR) theory is a model used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell.
6.
FLASHCARD QUESTION
Front
What is the shape of a molecule with four bonding pairs and no lone pairs?
Back
The shape of a molecule with four bonding pairs and no lone pairs is tetrahedral.
7.
FLASHCARD QUESTION
Front
What is the shape of a molecule with three bonding pairs and one lone pair?
Back
The shape of a molecule with three bonding pairs and one lone pair is trigonal pyramidal.
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