AP Chemistry - Unit 2 Review

Front

What type of alloy is bronze?

Back

Bronze is a substitutional alloy, where some of the metal atoms in the alloy are replaced by other metal atoms.

Front

What is the bond hybridization of the central carbon in dichloromethane (CH2Cl2)?

Back

The bond hybridization of the central carbon in dichloromethane is sp^3.

Front

Which substance has the highest melting point based on lattice energy and Coulomb's Law: NaCl, NaF, MgCl2, or MgF2?

Back

MgF2 has the highest melting point due to its greater lattice energy.

Front

How many pi bonds are present in capsaicin?

Back

Capsaicin contains 5 pi bonds.

Front

Which of the following molecules is nonpolar: CH3F, CF4, or HF?

Back

CF4 is a nonpolar molecule.

Front

Define a substitutional alloy.

Back

A substitutional alloy is formed when some of the atoms in the original metal are replaced by other atoms of similar size.

Front

What is the significance of lattice energy in ionic compounds?

Back

Lattice energy is the energy released when gaseous ions form an ionic solid; it influences the melting point and stability of the compound.

Front

Explain the concept of hybridization in chemistry.

Back

Hybridization is the mixing of atomic orbitals to form new hybrid orbitals that can accommodate the bonding of atoms in molecules.

Front

What is the molecular geometry of a molecule with sp^3 hybridization?

Back

The molecular geometry of a molecule with sp^3 hybridization is tetrahedral.

Front

How does Coulomb's Law relate to the melting points of ionic compounds?

Back

Coulomb's Law states that the force between two charged particles is proportional to the product of their charges and inversely proportional to the square of the distance between them, affecting the melting points of ionic compounds.