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Ch.4 Molecular CompoundsWorksheetSee all chapters
All Chapters
Ch.1 Chemistry, Matter, and Measurement
Ch.1 Matter and Measurements
Ch.2 Atoms and the Periodic Table
Ch.3 Ionic Compounds
Ch.4 Molecular Compounds
Ch.5 Classification & Balancing of Chemical Reactions
Ch.6 Chemical Reactions & Quantities
Ch.7 Energy, Rate and Equilibrium
Ch.8 Gases, Liquids and Solids
Ch.9 Solutions
Ch.10 Acids and Bases
Ch.11 Nuclear Chemistry
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Sections
Covalent Bonds
Naming Binary Molecular Compounds
Molecular Models
Bonding Preferences
Lewis Dot Structures: Neutral Compounds (Simplified)
Multiple Bonds
Multiple Bonds (Simplified)
Lewis Dot Structures: Multiple Bonds
Lewis Dot Structures: Ions (Simplified)
Lewis Dot Structures: Exceptions (Simplified)
Resonance Structures (Simplified)
Valence Shell Electron Pair Repulsion Theory (Simplified)
Electron Geometry (Simplified)
Molecular Geometry (Simplified)
Bond Angles (Simplified)
Dipole Moment (Simplified)
Molecular Polarity (Simplified)

Dipole arrows are used anytime a molecule possesses a dipole moment, which happens when a molecule is polar. 

Electronegativity and Dipole Moment

Concept #1: Electronegativity

Moving towards the top right corner of the Periodic Table causes Electronegativity to increase.

Example #1: Which of the following represents the most electronegative alkaline earth metal?

Concept #2: Dipole Moment

Example #2: Calculate the difference in electronegativity values between carbon and fluorine.

Practice: Arrange the following molecules in order of decreasing dipole moment.

H–I           H–F         H–Br         H–Cl

Concept #3: Further Chemical Bond Classifications

Example #3: For those listed below, which has the most polar bond?

Practice: Which of the following correctly identifies the chemical bond between a carbon and oxygen atom?

a) Polar Covalent

b) Pure Covalent

c) Nonpolar 

d) Ionic

Practice: Arrange the following elements in order of decreasing electronegativity: P, Na, N, Al

Practice: Between which two elements is the difference in electronegativity the greatest?

Practice: Which of the following correctly identifies the chemical bond between two bromine atoms?