Polar and Nonpolar Molecules Worksheet
Explore the concepts of polar and nonpolar molecules, electronegativity, and molecular geometry with this comprehensive grade 9 science worksheet.
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Polar and Nonpolar Molecules
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Read each question carefully and provide your answer in the space provided. For multiple-choice questions, circle the letter corresponding to the correct answer.
1. Which of the following best describes a polar molecule?
A molecule with an even distribution of electron density.
A molecule with a symmetrical shape.
A molecule with a partial positive and partial negative charge.
A molecule that does not dissolve in water.
2. Which of the following factors contributes to a molecule being nonpolar?
Unequal sharing of electrons.
Presence of lone pairs on the central atom.
Symmetrical molecular geometry.
Large difference in electronegativity between atoms.
3. The ability of an atom to attract electrons in a chemical bond is called .
4. Water (H2O) is a molecule because of its bent shape and unequal sharing of electrons.
5. Oils and fats are generally molecules, which is why they do not mix with water.
6. All molecules with polar bonds are considered polar molecules.
True
False
7. Carbon dioxide (CO2) is a nonpolar molecule despite having polar bonds.
True
False
8. Explain the difference between a polar bond and a nonpolar bond.
9. Describe how molecular geometry can influence whether a molecule is polar or nonpolar. Provide an example.