CHAP 2 KINETIC PARTICLE THEORY

Question 1

what does FAMEV stand for?

Answer 1

Forces
Arrangement
Movement
Energy
Volume

Question 2

state the FAMEV of SOLID

Answer 2

F- VERY strong forces of attraction
A- closely packed and arranged in orderly manner
M- vibrate and rotate about its fixed position
E- very low kinetic particle energy (cant move around fast)
V- definite volume

Question 3

state FAMEV of LIQUID

Answer 3

F- less strong FOA
A- closely packed in disorderly manner
M- slide past one another freely throughout liquid
E- low kinetic energy (can move around at a moderate speed)
V- definite volume

Question 4

state FAMEV of gases ]

Answer 4

F- very weak FOA
A- very far apart in a disorderly manner
M- move quickly and randomly at high speeds in different directions
E- high (can move around quickly)
V- indefinite volume

Question 5

describe process of MELTING ( SOLID-> LIQUID )

Answer 5

1) Thermal energy is converted to kinetic energy of particles
2) Particles vibrate and rotate about its fixed position
3) Thermal energy from surrounding/ heat source is absorbed and temperature of solid at melting point
4) Particles with increased energy can overcome the FOA in solid state.
5) orderly packing arrangement of the particles is disrupted
6) temperature (melting point) remains constant until rest of substance is melted

Question 6

describe the process of FREEZING

Answer 6

occurs at the melting point
1) particles release heat and move more freely
2) particles with less energy are drawn closer by the FOA between them.
3) particle arrangement becomes more orderly

Question 7

describe the process of BOILING

Answer 7

1) occurs at boiling point
2) particles absorb heat and gain more kinetic energy
3) particles move fast enough to completely overcome FOA
4) particles can move quickly and freely in different directions

Question 8

state process of EVAPORATION

Answer 8

occurs below the boiling point
1) particles at surface gain sufficient energy to escape into surroundings

Question 9

state process of CONDENSATION

Answer 9

occurs at boiling point
1) particles release heat and move more slowly
2) the FOA are then able to hold the particles closely

Question 10

examples of substances that goes through SUBLIMATION

Answer 10

1) dry ice
2) naphthalene
3) iodine