AP Chemistry Units 1-4 Review

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).

Front

What is an empirical formula?

Back

An empirical formula represents the simplest whole-number ratio of the elements in a compound.

Front

List the four intermolecular forces from weakest to strongest.

Back

London dispersion, dipole-dipole, hydrogen bonding, ion-dipole.

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.

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.

Front

What is the molecular geometry (mg) of a molecule?

Back

Molecular geometry describes the arrangement of only the bonded atoms in a molecule.

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.

Front

What is the relationship between molecular geometry and polarity?

Back

The molecular geometry determines the distribution of charge in a molecule, affecting its overall polarity.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is hydrogen bonding?

Back

Hydrogen bonding is a strong type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like N, O, or F.