Grade 11 Chemistry: Dipole Moments
Explore dipole moments in molecules with this Grade 11 chemistry worksheet, covering polarity, molecular geometry, and bond dipoles.
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Grade 11 Chemistry: Dipole Moments
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Read each question carefully and provide your best answer. Show all work for calculations.
1. Which of the following molecules has a net dipole moment of zero?
H2O
CO2
NH3
HCl
2. What is the primary factor that determines if a bond is polar?
Atomic radius
Electronegativity difference
Number of valence electrons
Ionization energy
1. A dipole moment arises from the unequal sharing of electrons between atoms, resulting in a partial positive charge (δ+) and a partial negative charge (δ-) across the .
2. For a molecule to be polar, it must have polar bonds and an molecular geometry.
1. All molecules with polar bonds are polar overall.
True
False
2. The dipole moment is a vector quantity, possessing both magnitude and direction.
True
False
1. Explain the difference between a bond dipole and a molecular dipole.
2. Draw the Lewis structure and indicate the bond dipoles and overall molecular dipole for a water molecule (H2O).
Match the molecule with its likely dipole moment characteristic.
1. CCl4
a. Polar molecule
2. CH3Cl
b. Nonpolar molecule
3. BF3
c. Contains polar bonds but is nonpolar overall