AP Chemistry -Unit 2 - Thou Shall Not Forget

Front

Why are asymmetrical molecules polar?

Back

Their dipoles do not cancel.

Front

What is the hybridization of carbon in CH₄?

Back

sp³.

Front

When a molecular solid melts or boils, which breaks?

Back

Intermolecular forces.

Front

In this molecule, Carbon has a formal charge of ____ and Nitrogen has a formal charge of _____.

Back

-1, 0.

Front

What type of bond forms between hydrogen and chlorine?

Back

polar covalent.

Front

Define polar molecule.

Back

A molecule with a net dipole moment due to the presence of polar bonds and an asymmetrical shape.

Front

What is hybridization?

Back

The mixing of atomic orbitals to form new hybrid orbitals suitable for the pairing of electrons to form chemical bonds.

Front

Explain the difference between intermolecular and intramolecular forces.

Back

Intermolecular forces are forces between molecules, while intramolecular forces are forces within a molecule.

Front

What is a formal charge?

Back

The charge assigned to an atom in a molecule, calculated by the difference between the number of valence electrons and the number of electrons assigned to the atom in the Lewis structure.

Front

What is the shape of a molecule with sp² hybridization?

Back

Trigonal planar.