AP Chemistry -Unit 2 - Thou Shall Not Forget

Front

What is the bond angle in H₂O?

Back

104.5 degrees

Front

Count the number of sigma and pi bonds in a molecule with 13 sigma and 1 pi bond.

Back

13 sigma, 1 pi

Front

What is the shape of a molecule with a trigonal pyramidal geometry?

Back

Trigonal pyramidal

Front

In a molecule, if Carbon has a formal charge of -1 and Nitrogen has a formal charge of 0, what are their charges?

Back

Carbon: -1, Nitrogen: 0

Front

What is the total number of covalent bonds carbon can form when drawing a Lewis structure?

Back

4

Front

Define sigma bond.

Back

A sigma bond is a type of covalent bond formed by the direct overlap of atomic orbitals.

Front

Define pi bond.

Back

A pi bond is a type of covalent bond formed by the side-to-side overlap of p orbitals.

Front

What is the VSEPR theory?

Back

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

Front

What is a formal charge?

Back

Formal charge is the charge assigned to an atom in a molecule, calculated by the number of valence electrons minus the number of non-bonding electrons and half the number of bonding electrons.

Front

What is the difference between a single bond and a double bond?

Back

A single bond consists of one sigma bond, while a double bond consists of one sigma bond and one pi bond.