Semester 1 test 2024 -2025 AP chemistry

Front

What is the molecular geometry of CCl4?

Back

Tetrahedral.

Front

What is the hybridization of the central atom in CH2O?

Back

sp2.

Front

What is the significance of keeping electric appliances away from water in a laboratory?

Back

To prevent electrical hazards and ensure safety.

Front

Which bond is more polar: C-Cl or C-H?

Back

C-Cl is more polar due to the greater electronegativity difference.

Front

What is the common oxidation state of oxygen in compounds?

Back

-2.

Front

Define a double bond in chemistry.

Back

A double bond is a chemical bond between two atoms involving four bonding electrons instead of the usual two.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

What is the Lewis structure used for?

Back

To represent the bonding between atoms in a molecule and the lone pairs of electrons.

Front

What is the formula for calculating the formal charge of an atom?

Back

Formal Charge = Valence Electrons - (Non-bonding Electrons + 1/2 Bonding Electrons).