Chapter 12

Question 0

Heat of fusion

Answer 0

The amount of energy required to melt 1 mol of a given solid

Question 1

Melting

Answer 1

Melting point is the temperature at which the molecules start vibrating faster and turn from solid to liquid

Question 2

Sublimation

Answer 2

Sublimation is a physical change in which a substance changes from it’s solid state directly to it’s gaseous state.

Question 3

Dispersion force

Answer 3

The default intermolecular force, present in all atoms and molecules.

Question 4

Instantaneous dipole

Answer 4

When electrons are unbalanced in an atom and create temporary charges.

Question 5

Dipole-dipole

Answer 5

Exists in all polar molecules

Polar molecules have permanent dipoles that interact with other permanent dipoles. Essentially magnetic

Question 6

Miscibility

Answer 6

Molecules ability to mix without separating into two phases.

Question 7

Polar liquids are miscible with ____ liquids

Answer 7

Polar

Question 8

Hydrogen bonding

Answer 8

Molecules containing a hydrogen bond. Super dipole force

Question 9

Ion-dipole force

Answer 9

Occurs in mixtures of ionic compounds and polar compounds, especially important in aqueous solutions of ionic compounds.

Question 10

Molecular solids

Answer 10

Low melting points
Composite units are molecules
Crystaline

Question 11

Ionic solids

Answer 11

Composite units are formula units
High melting point
Ionic
Crystalline

Question 12

Atomic solids

Answer 12

Composite units are atoms
Atomic 
Variable melting points 
Pure elements
Crystalline