Chemistry: Chemical Bonding & Molecular Structure Flashcards
7 cards from real AP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Chemistry: Chemical Bonding & Molecular Structure flashcards as text
Which statement best describes a covalent network solid like diamond?
Answer: Atoms are bonded by a continuous network of covalent bonds
Diamond is a covalent network solid where every carbon is covalently bonded in a continuous 3D lattice.
Why do metals conduct electricity well?
Answer: They contain delocalized electrons free to move
Metallic bonding involves a sea of delocalized electrons that move freely, allowing electrical conductivity.
Which molecule has a trigonal pyramidal shape?
Answer: NH3
NH3 has three bonding pairs and one lone pair, producing a trigonal pyramidal geometry.
Using electronegativity, which bond would be classified as predominantly ionic?
Answer: K-Br
K-Br has a large electronegativity difference (metal and nonmetal), making it predominantly ionic.
What does a higher bond order generally indicate about a chemical bond?
Answer: Shorter and stronger bond
Higher bond order means more shared electron pairs, producing a shorter and stronger bond.
Which of the following is an example of an expanded octet?
Answer: PCl5
PCl5 has ten electrons around phosphorus, exceeding the octet using available d orbitals.
Which pair of molecules can form hydrogen bonds with each other?
Answer: NH3 and H2O
NH3 and H2O both have H bonded to electronegative atoms (N and O), enabling hydrogen bonding between them.