Lesson 43: The Bear Essentials of Polarity

Electronegativity: the ability of an atom to attract

BONDING electrons to itself.

Draw

Label the partial charges in the HCl molecule.

Multiple Select

Oxygen is more electronegative than carbon. Carbon and hydrogen have similar electronegativity values.

Which bond(s) would you expect to be polar? Select all that apply.

• C-H

• C-O

• C-C

• O-O

• O-H

Dropdown

According to the illustration, ​

Select answer

represent more electronegative atoms and ​

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represent less electronegative atoms.

Reorder

Reorder the following atoms from MOST to LEAST electronegative.

• fluorine

• nitrogen

• carbon

• hydrogen

1

2

3

4

• 1
• 2
• 3
• 4

Dropdown

The ​

Select answer

are the most electronegative atoms and the ​

Select answer

are the least electronegative atoms.

Nonpolar bonds occur between two atoms that have

similar electronegativities.

Polar bonds occur between two atoms that have

different electronegativities.

Drag and Drop

​

Placeholder

bonds occur when the two bonding atoms have ​

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electronegativities. ​

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bonds occur when the two bonding atoms have ​different electronegativities.

Drag these tiles and drop them in the correct blank above

Nonpolar

similar

Polar

ionic

metallic

Drag and Drop

When two identical atoms, such as two oxygen atoms, bond, the resulting bond is​

Placeholder

Drag these tiles and drop them in the correct blank above

nonpolar covalent

polar covalent

ionic

metallic

Drag and Drop

When two atoms with different electronegativities, such as hydrogen and fluorine, bond, the bond is ​

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. ​ This means that bond has a ​

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end and a ​

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end.

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polar covalent

partial positive

partial negative

nonpolar covalent

ionic

positive

negative

Match

Match the following bond types to their descriptions:

• ionic

• nonpolar covalent

• polar covalent

• metallic

• hydrogen

electrons are completely transferred from one atom to another

electrons are shared equally between atoms

electrons are shared unevenly between atoms

collective sharing of a sea of electrons between metal atoms

weak intermolecular force

• electrons are completely transferred from one atom to another

• electrons are shared equally between atoms

• electrons are shared unevenly between atoms

• collective sharing of a sea of electrons between metal atoms

• weak intermolecular force

Draw

Draw dipoles for the following molecules. If none, indicate that there are none.

Open Ended

Explain in your own words why water, H₂O, is polar but carbon dioxide, CO₂, is not.