SOLUTION: 8 polar and nonpolar molecules s - Studypool - Free Printable

Problem Analysis:

The task asks us to differentiate between a polar bond and a nonpolar bond based on the information provided in Model 1 of the image. The key elements to consider are:

1. Definition of Polar and Nonpolar Bonds:
- A polar bond occurs when there is an uneven distribution of electron density between the atoms involved in the bond. This happens due to a difference in electronegativity between the two atoms.
- A nonpolar bond occurs when the electrons are shared equally between the atoms, resulting in no net charge separation.

2. Visual Representation:
- In the image, polar bonds are represented by a specific symbol (e.g., a dipole arrow or a shaded region indicating partial charges).
- Nonpolar bonds are typically depicted without any such indication, as the electrons are shared equally.

3. Key Observations from Model 1:
- Nonpolar Molecules: These molecules have bonds where the electrons are shared equally, and there are no indications of partial charges or dipoles.
- Polar Molecules: These molecules have at least one bond where the electrons are not shared equally, leading to partial charges or dipoles.

Solution:

#### Step 1: Understanding the Symbols
- Polar Bond: In the image, a polar bond is indicated by a shaded region or a dipole arrow near the bond. This shading represents the partial negative charge on one atom and the partial positive charge on the other atom.
- Nonpolar Bond: A nonpolar bond is shown without any shading or dipole arrow, indicating that the electrons are shared equally between the atoms.

#### Step 2: Differentiating Between Polar and Nonpolar Bonds
- Polar Bond Characteristics:
- Unequal sharing of electrons due to a difference in electronegativity.
- Results in a partial negative charge on the more electronegative atom and a partial positive charge on the less electronegative atom.
- Visually represented by shading or a dipole arrow in the diagram.

- Nonpolar Bond Characteristics:
- Equal sharing of electrons because the atoms have similar electronegativity.
- No partial charges develop on the atoms.
- Visually represented without any shading or dipole arrow in the diagram.

#### Step 3: Conclusion
A polar bond is differentiated from a nonpolar bond based on the following criteria:
1. Electron Distribution: In a polar bond, the electrons are unequally shared, leading to partial charges. In a nonpolar bond, the electrons are equally shared, with no partial charges.
2. Visual Indicators: In the given model, polar bonds are marked with shading or dipole arrows, while nonpolar bonds are not marked in this way.

Final Answer:

\[
\boxed{\text{A polar bond is differentiated from a nonpolar bond by the unequal sharing of electrons, resulting in partial charges, whereas a nonpolar bond has equal sharing of electrons with no partial charges.}}
\]