AP Chem Unit 2

Front

What is lattice energy?

Back

Lattice energy is the energy released when gaseous ions combine to form an ionic solid. It is a measure of the strength of the forces between the ions in an ionic solid.

Front

How does ionic radius affect lattice energy?

Back

The larger the ionic radius, the smaller the magnitude of lattice energy. This is because larger ions are further apart, resulting in weaker electrostatic forces.

Front

What is a substitutional alloy?

Back

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

Front

What is an interstitial alloy?

Back

An interstitial alloy is formed when small atoms fill the spaces (interstices) between the larger metal atoms in a metallic lattice.

Front

What is the bond angle in a tetrahedral molecule?

Back

The bond angle in a tetrahedral molecule, such as CH4, is 109.5 degrees.

Front

What is hybridization?

Back

Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals that can form bonds with other atoms.

Front

What is the hybridization of carbon in methane (CH4)?

Back

The hybridization of carbon in methane (CH4) is sp3 hybridization.

Front

What is the hybridization of boron in BF2?

Back

The hybridization of boron in BF2 is sp hybridization.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of chemical bond where electrons are shared unequally between two non-metal atoms with different electronegativities.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.