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Polar and Non-Polar Molecules Distinction
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Polar and Non-Polar Molecules Distinction

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Questions and Answers

Which of the following is a characteristic of non-polar molecules?

  • They are made up of single element atoms or diatomic molecules with identical outer elements (correct)
  • They have significant electronegativity differences between their atoms
  • They have a dipole moment that doesn't cancel in asymmetrical molecules
  • They have hydrogen bonding or asymmetrical shapes
  • What contributes to the polarity of a molecule?

  • The presence of a dipole moment that cancels out in asymmetrical molecules
  • Symmetric shapes with identical outer elements
  • Significant electronegativity differences between atoms
  • Lone pairs of electrons and hydrogen bonding (correct)
  • Which of the following is an example of a polar molecule?

  • NH3 (correct)
  • CO2
  • CH4
  • O2
  • What type of bonding occurs in polar molecules?

    <p>Hydrogen bonding</p> Signup and view all the answers

    Study Notes

    • The video discusses methods to distinguish polar molecules from non-polar ones.
    • Non-polar molecules are typically made up of single element atoms or diatomic molecules with identical outer elements.
    • Examples of non-polar molecules include O2, N2, CH4, and CO2.
    • Symmetric molecules with identical outer elements are also non-polar.
    • Non-polar molecules do not have significant electronegativity differences between their atoms.
    • Polar molecules, on the other hand, have hydrogen bonding or asymmetrical shapes.
    • Hydrogen bonding occurs when hydrogen is directly bonded to nitrogen, oxygen, or fluorine.
    • Examples of polar molecules include H2O, NH3, HF, and CH3OH.
    • Asymmetrical shapes and lone pairs of electrons also contribute to polarity.
    • Polar molecules have larger electronegativity differences between their atoms.
    • The presence of a dipole moment, which doesn't cancel in asymmetrical molecules, indicates polarity.

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    Description

    Learn about the methods used to differentiate between polar and non-polar molecules based on factors such as electronegativity differences, hydrogen bonding, and shapes. Explore examples of both polar and non-polar molecules and understand the concept of dipole moments.

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