Chemistry Unit 6: Covalent Bonds

What are polar covalent bonds?

Bond that shares electrons unevenly.

What are nonpuolar covalent bonds?

Bond that shares electrons evenly.

What are Ionic bonds?

Bond in which electrons are completely transferred

How is bond type determined?

Attraction for the electrons

What is electronegativity?

The ability for an atom to attract electrons in a bond

When do true nonpolars occur?

When atoms bond to themselves (no lone pairs)

What charge does a more electronegative atom have?

Partial negative

What charge does a less electronegative atom have?

Partial positive

What forms a dipole?

Polar bonds with an unequal sharing of electrons

What are nonpolar covalent molecules?

Perfectly symmetrical around the central atom

Pulled equally in all directions

What are polar covalent molecules?

Asymmetrical pull around the central atom

What are the properties of covalents?

Gases; soft and crystalline when solid; weak forces of attraction (intermolecular forces); low melting points; dissolving

What is bond length?

The area of electronegativity

Which bond is the longest?

Single bonds

What bond is the shortest?

Triple bonds

Which bond is the weakest?

Single bond

What bond is the strongest?

Triple bond