AP Chemistry Units 1-4 Review

AP Chemistry Units 1-4 Review

Assessment

Flashcard

Chemistry

University

Hard

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15 questions

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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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