AP Chem ​Molecular Polarity Quick Simulation

​Molecular Polarity

By Gordon Burnett

Due to differences in electronegativities molecules can have partial positive (δ⁺) or partial negative (δ^-) charges on individual atoms/portions.

Polarity of molecules

Typically in a polar covalent bond the more electronegative atom will be partial negative

Where to place it?

Why are they important?

The placement of these partial charges effects how molecules can interact with each other, magnetic fields, and different solvents.

Labelling

Based on general trends in electronegativity place the δ⁺ and δ^- above the correct atom(s) in the image.

Drag labels to their correct position on the image

δ^-

δ⁺

Labelling

Based on general trends in electronegativity place the δ⁺ and δ^- above the correct atom(s) in the image.

Drag labels to their correct position on the image

δ^-

δ⁺

Labelling

Based on general trends in electronegativity place the δ⁺ and δ^- above the correct atom(s) in the image.

Drag labels to their correct position on the image

δ⁺

δ^-

Open Ended

What do you think will happen to this molecule when we turn on an electric field?

On the next slide Click on "Two Atoms", then set up the molecule to look like this.

​​Step 1

When you're ready turn on the electric field and make note of what happens to the molecule.

​​Step 2

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On the next slide Click on "Three Atoms", then set up the molecule to look like this.

​​Step 1

When you're ready turn on the electric field and make note of what happens to the molecule.

​​Step 2

Open Ended

Do you think this molecule is polar or non-polar? Explain your reasoning.

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Open Ended

Why is the electron density greater on the oxygen than it is on the hydrogens?

Dropdown

Based on this image the oxygen atom will likely have a partial ​

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charge and the hydrogen atoms will have a partial ​

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charge.