Chapter 6 - Shapes of molecules and Intermolecular forces

Question 1

Hydrocarbon

Answer 1

A compound that contains carbon and hydrogen only

Question 2

Electronegativity

Answer 2

The ability of a bonded atom to attract the shared pair of electrons in a covalent bond

Question 3

Polar bond

Answer 3

When the bonded electron pair is shared unequally between the bonded atoms. Occurs when bonded atoms: are different or have different electronegativities

Question 4

Non-polar bond

Answer 4

When the bonded electron pair is shared equally between the bonded atoms. Occurs when bonded atoms: are the same or have the same or similar electronegativity

Question 5

London forces (Induced dipol-dipol interactions)

Answer 5

Weak, temporary intermolecular forces that exist between all molecules (Polar & Non-polar) and act between induced dipols in different molecules

Question 6

Permanent dipol-dipol interactions

Answer 6

Intermolecular forces which act between the permenant dipols in different polar molecules

Question 7

Hydrogen bonding

Answer 7

A special type of permanent dipol-dipol interaction found between hydrogen and either N,O or F. (must have a lone pair of electrons)