Crash Course Organic Chemistry Quiz

What is the main reason for understanding the 3D shapes of molecules?

• To draw better 2D structures

• To simplify chemical equations

• To predict molecular behavior and interactions

• To improve color representation in models

Which theory helps explain the 3D shapes of molecules by considering electron pairs?

• Quantum Theory

• VSEPR Theory

• Molecular Orbital Theory

• Lewis Theory

What is the result of mixing one s orbital with two p orbitals?

• One sp3d orbital

• Four sp3 orbitals

• Three sp2 orbitals

• Two sp orbitals

In a methane molecule, what type of bonds are formed between carbon and hydrogen?

• Sigma bonds

• Ionic bonds

• Hydrogen bonds

• Pi bonds

What is the molecular geometry of ethyne?

• Tetrahedral

• Trigonal planar

• Bent

• Linear

Which hybridization is common for oxygen in water molecules?

• sp

• sp2

• sp3

• sp3d

Who suggested the correct structure for DNA's nitrogenous bases?

• Rosalind Franklin

• Jerry Donohue

• Erwin Chargaff

• Phoebus Levene

What are constitutional isomers?

• Molecules with identical structures and properties

• Molecules with the same atoms and connections but different spatial arrangements

• Molecules with different molecular formulas but similar structures

• Molecules with the same molecular formula but different atom-to-atom connections

What is the main difference between geometric isomers?

• Different numbers of atoms

• Different spatial arrangements of bonds

• Different atom-to-atom connections

• Different molecular formulas

What prefix is used to describe geometric isomers with groups on the same side of a double bond?

• E

• Cis

• Iso

• Trans