AP Chemistry Units 1-4 Review

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Chemistry
•
University
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the average atomic mass of an element?
Back
The average atomic mass is the weighted average of the masses of an element's isotopes, measured in atomic mass units (amu).
2.
FLASHCARD QUESTION
Front
What is an empirical formula?
Back
An empirical formula represents the simplest whole-number ratio of the elements in a compound.
3.
FLASHCARD QUESTION
Front
List the four intermolecular forces from weakest to strongest.
Back
London dispersion, dipole-dipole, hydrogen bonding, ion-dipole.
4.
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 its polarity.
5.
FLASHCARD QUESTION
Front
What is the electron geometry (eg) of a molecule?
Back
Electron geometry describes the spatial arrangement of all electron groups (bonding and lone pairs) around a central atom.
6.
FLASHCARD QUESTION
Front
What is the molecular geometry (mg) of a molecule?
Back
Molecular geometry describes the arrangement of only the bonded atoms in a molecule.
7.
FLASHCARD QUESTION
Front
What is the significance of the Lewis structure?
Back
A Lewis structure represents the bonding between atoms in a molecule and the lone pairs of electrons that may exist.
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