Phase Changes

Question 0

Volume and shape of ?
Gas
Liquid
Solid

Answer 0

Conforms to volume and shape
Definite volume, conforms to shape
Definite volume and shape

Question 1

What are the phases referred to as condensed phases ?

Answer 1

Liquids and solids

Question 2

Motion?
Gas
Liquid
Solid

Answer 2

Continual movement
Sliding motion
Fixed position

Question 3

Ability to be compressed?
Gas
Liquid
Solid

Answer 3

Compressible
Incompressible
Incompressible

Question 4

The degree to which two liquids can mix due to polarities

Answer 4

Miscibility

Question 5

A homogenous mixture due to violent shaking of two immiscible liquids

Answer 5

Emulsion

Question 6

Possess an ordered structure
Are exist in specific 3d geometric arrangement
Repeating patterns of atoms ions and molecules

Answer 6

Crystalline solid

Question 7

No ordered 3 d arrangement

Molecules are fixed in place

Answer 7

Amorphous solid

Question 8

Two common forms of crystal?

Answer 8

Metallic and ionic crystal

Question 9

Aggregates of positive and negative charges ions
High melting and boiling points
Poor conductivity
Strong electrostatic interactions

Answer 9

Ionic solids

Question 10

Atoms packed close together
High melting and boiling points due to covalent attractions
Layers of spheres of roughly similar radii

Answer 10

Metallic solids

Question 11

The smallest repeating unit that compose the larger crystalline structure

Answer 11

Unit cells

Question 12

The 3 types of cubic unit cells

Answer 12

Simple cubic
Body centered cubic
Face centered cubic

Question 13

Each time the liquid loses a high energy particle did to evaporation the temperature ___ this this is a ____ process

Answer 13

Decreases

Cooling

Question 14

Gas to liquid

Answer 14

Condensation

Question 15

The pressure that the gas exerts over a liquid

Answer 15

Vapour pressure

Question 16

With increasing temperature , vapour pressure ____

Answer 16

Increases

Question 17

The temperature at which the vapour pressure of the liquid equals the external pressure

Answer 17

The boiling point

Question 18

Another word for melting

Answer 18

Fusion

Question 19

Tend to melt over a larger range of temperatures due to their less ordered molecular distribution

Answer 19

Amorphous solids

Question 20

Solid to gas

Answer 20

Sublimation

Question 21

Gas to solid

Answer 21

Deposition

Question 22

The change in Gibbs free energy at equilibrium must be _____

Answer 22

Zero

Question 23

Ga phase is found at
___ temperatures
____ pressure

Answer 23

High

Low

Question 24

Solid phase is found at
____ temperature
____ pressure

Answer 24

Low

High

Question 25

The liquid phase is found at
____ temperature
\____ pressure

Answer 25

High

High

Question 26

The temperature and pressure in which all 3 phases are in equilibrium

Answer 26

The critical point

Question 27

Physical properties derived solely from the number of particles present , not the nature of those particles

Answer 27

Colligative properties

Question 28

For every mole of solute particles dissolved in 1L of water the freezing point is lowered by ?

Answer 28

1.86 degrees c

Question 29

Van’t hoff factor (i)?

Answer 29

The number of particles dissociating from the original molecule

Question 30

Salt ____ the melting point of the water

Answer 30

Decreases/ depresses

Question 31

What is the ideal gas law constant ?

Answer 31

r= 8.2x 10^-2