Podcast
Questions and Answers
Which of the following is a characteristic of non-polar molecules?
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?
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?
Which of the following is an example of a polar molecule?
- NH3 (correct)
- CO2
- CH4
- O2
What type of bonding occurs in polar molecules?
What type of bonding occurs in polar molecules?
Flashcards
Non-polar molecules
Non-polar molecules
Molecules composed of identical elements or single elements, lacking uneven charge distribution.
Polarity in molecules
Polarity in molecules
Uneven distribution of electrons, causing regions with positive and negative charges.
Polar molecule
Polar molecule
A molecule with a distinct positive and negative end due to uneven electron distribution.
Hydrogen bonding
Hydrogen bonding
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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.
