Module 4

Question 1

Sublimation

Answer 1

The process by which a solid turns into a gas without passing through a liquid phase

Question 2

Boiling Point

Answer 2

The temperature at which a liquid’s vapor pressure equals the current atmospheric pressure

Question 3

normal boiling point

Answer 3

The temperature at which a liquid’s vapor pressure equals nurmal atmospheric pressure (1 atm)

Question 4

Triple point

Answer 4

The temperature and pressure at which all three phases of matter exist together in a given substance.

Question 5

In a face-centered cubic crystal,

Answer 5

r = (square root of 2) • (edge length)/ 4

Question 6

In a body-centered cubic crystal,

Answer 6

r = (square root of 3) • (edge length) / 4

Question 7

Lattice energy

Answer 7

The energy required to separate the ions in an ionic solid.

Question 8

In a simple cubic crystal,

Answer 8

the radius of the atom is 1/2 the edge of the unit cell.

Question 9

Density =

Answer 9

Mass/Volume

Question 10

1 amu=

Answer 10

1.66 X 10^-24 g

Question 11

Boiling point Increases with

Answer 11

increasing intermolecular forces

Question 12

Vapor pressure decreases with

Answer 12

increasing intermolecular forces