AP Chemistry Unit 2 practice questions: Compound Structure and Properties
8 original multiple-choice questions on AP Chem Unit 2, compound structure and properties. Answer each one in your browser and read the explanation, then review the key ideas below.
Question 1 of 8
What is the molecular geometry of NH₃?
Question 2 of 8
Which molecule is nonpolar even though it contains polar bonds?
Question 3 of 8
Which substance is held together mainly by ionic bonds?
Question 4 of 8
Which bond is the most polar?
Question 5 of 8
What is the hybridization of the carbon atom in CH₄?
Question 6 of 8
What is the bond angle in a trigonal planar molecule such as BF₃?
Question 7 of 8
How many valence electrons are in the Lewis structure of CO₂?
Question 8 of 8
Metals conduct electricity well because
Key ideas in Unit 2
- Ionic bonds form between metals and nonmetals, covalent bonds between nonmetals, and metallic bonds give metals a sea of delocalized electrons.
- Bond polarity depends on the electronegativity difference; the more different the atoms, the more polar the bond.
- Draw Lewis structures by counting valence electrons, and use formal charge to choose between structures.
- VSEPR predicts shape from electron domains: 2 linear (180°), 3 trigonal planar (120°), 4 tetrahedral (109.5°), with lone pairs changing the molecular geometry.
- Hybridization matches the number of electron domains: sp, sp², sp³.
More AP Chem practice
← Unit 1: Atomic Structure and Properties
Unit 3: Properties of Substances and Mixtures →
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