Lesson 7.5 Polar molecules have polar bonds - Clare Peters-Libeu | Laabri

Question 1

00:49

Question 2

02:09

Question 3

02:47

Questions 4 & 5

04:33

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1

The difference in electronegativity between chlorine and hydrogen is

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3

Mmuae Afoforo a Wobɛpaw:

negatively charged with a charge of -1

nonpolar

negatively charged

polar

ionic

slightly negatively charged

slightly positively charged

positively charged with a positive charge of +1

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1

The difference in electronegativity between oxygen and hydrogen is

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3

Mmuae Afoforo a Wobɛpaw:

ionic

slightly positively charged

positively charged with a positive charge of +1

negatively charged

nonpolar

negatively charged with a charge of -2

slightly negatively charged

polar

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1

What is the electronegativity different between oxygen and sodium?

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3

Mmuae Afoforo a Wobɛpaw:

negatively charged with a charge of -2

nonpolar

polar

positively charged with a positive charge of +1

slightly positively charged

slightly negatively charged

negatively charged

ionic

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1

What is the electronegativity difference between carbon and hydrogen atoms?

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2

Mmuae Afoforo a Wobɛpaw:

ionic

polar

nonpolar

negatively charged

neutral

slightly negatively charged

Negatively charged with a charge of -4

slightly positively charged

positively charged with a positive charge of +1

3

Polar bonds in organic molecules tend to contain hydrogen. Which elements make polar bonds with hydrogen?

3

Which elements make polar bonds with carbon?

Choose the two atoms option

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and make sure that all the boxes are click on. It should look like this

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5

Examine how the initial screen and make the best match for each term or symbol

Draggable item		Corresponding Item
separation of charge		created by a separation of charge
polar bond		slightly positively charged
dipole		slightly negatively charged
δ⁻		bond in with a slightly positive end and a slightly negative atom
δ⁺		positive in one area and negative in another

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1

Set the electronegativity to the approximate settings in the picture. Draw in the bond dipole and show the partial charges.

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1

Set the electronegativity to the approximate settings in the picture. Draw in the bond dipole and show the partial charges.

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1

Set the electronegativity to the approximate settings in the picture. Draw in the bond dipole and show the partial charges.

Now that you understand how the dipoles arrows work. Switch to the 3 atom view to explore how you can make a molecule with a dipole. Make sure the bond dipole, molecular dipole and partial charges are turned on.

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1

Set up the electronegativities for the atoms in the picture below. Draw the molecular dipole and the bond dipoles for the atoms.

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1

Set up the electronegativities for the atoms in the picture below. Draw the molecular dipole and the bond dipoles for the atoms.

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1

Set up the electronegativities for the atoms in the picture below. Draw the molecular dipole and the bond dipoles for the atoms.

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1

Set up the electronegativities for the atoms in the picture below. Draw the molecular dipole and the bond dipoles for the atoms.

Create an experiment of your own to explore how changing the electronegativities of the difference atoms affects the molecular dipole. You should do 4 different experiments and draw the results in the next four questions. Can you find a situation in which there are bond dipoles but there is no molecular dipole?

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Experiment #1

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Experiment #2

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Experiment #3

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Experiment #4

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1

In your own words, explain how the molecular dipole is different from the bond dipoles.

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5

Is it possible to have a molecule with three atoms in which the bonds have dipoles but the molecule does not. Be sure to explain your answer and use evidence from your experiments.