AP Chem Unit 2 Review

Front

What is an ionic bond?

Back

An ionic bond results from the transfer of electrons from one atom to another, leading to the formation of charged ions that attract each other.

Front

What is the bond angle in a trigonal planar molecule?

Back

The bond angle in a trigonal planar molecule is 120 degrees.

Front

What is the geometry of a molecule with a central atom bonded to three other atoms and no lone pairs?

Back

The geometry is trigonal planar.

Front

What is formal charge?

Back

Formal charge is the charge assigned to an atom in a molecule, calculated by the formula: Formal Charge = Valence Electrons - (Non-bonding Electrons + 1/2 Bonding Electrons).

Front

What is the hybridization of a molecule with a central atom bonded to three other atoms and one lone pair?

Back

The hybridization is sp².

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons and the formation of ions, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the VSEPR theory?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory predicts the geometry of molecules based on the repulsion between electron pairs around a central atom.

Front

What is the bond angle in a tetrahedral molecule?

Back

The bond angle in a tetrahedral molecule is approximately 109.5 degrees.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms, resulting in a partial positive and negative charge.

Front

What is the significance of hybridization in chemistry?

Back

Hybridization explains the shape and bonding properties of molecules by mixing atomic orbitals to form new hybrid orbitals.