1. The Particulate Nature Of Matter

Question 1

Solid

Answer 1

Strong forces of attraction between particles
Fixed pattern (lattice)
Atoms vibrate but can’t change position
Fixed volume and shape

Question 2

Liquid

Answer 2

Weaker attractive forces than solids
No fixed pattern, liquids take up the shape of the container
Particles slide past each other

Question 3

Gas

Answer 3

Almost no intermolecular forces
Particles far apart and move quickly
Collide with each other and bounce in all directions

Question 4

Melting

Answer 4

Solid to Liquid

Endothermic

Question 5

Boiling

Answer 5

Liquid to gas

Endothermic

Question 6

Condensing

Answer 6

Gas to liquid

Exothermic

Question 7

Freezing

Answer 7

Liquid to solid

Exothermic

Question 8

Sublimation

Answer 8

Solid to gas

Endothermic

Question 9

Reverse Sublimation

Answer 9

Gas to solid

Exothermic

Question 10

Diffusion

Answer 10

The spreading of one substance through another from a region of high concentration to a region of low concentration due to continuous random motion of particles