How do models help scientists predict the polarity of molecules? Explain in 2-3 sentences.

Models help scientists predict the polarity of molecules because the bond polarity should be determined that lies between the molecule atoms.

The information with respect to the atom is as follows:

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Explanation:

Molecular models are representations of a molecule. A molecule may contain polar bonds but may not have an overall dipole moment as a result of its structure.

Hence, the possession of polar bonds alone is insufficient to determine a polar molecule. The molecular model gives a picture of the molecule and ultimately determines weather the molecule will possess a resultant dipole moment and be regarded as polar or non polar.

For instance, CO2 contains polar bonds but is nonpolar because it does  not have an overall (resultant) dipole moment.

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