chapter 7

Question 1

what is the motion called in which particles are moving constantly in matter

Answer 1

the Brownian motion

Question 2

what is the volume of solid liq and gas

Answer 2

definite, definite and indefinite respectively

Question 3

what is mass of solid liq and gas

Answer 3

all are definite

Question 4

can solid liq gas be compressed

Answer 4

no no and yes respectively

Question 5

what kind of shape do solid liq and gas have

Answer 5

definite, indefinite, and indefinite respectively

Question 6

what is the process called when solid becomes liquid

Answer 6

melting (heat gain)

Question 7

what is the process called when liquid becomes gas

Answer 7

evaporation and boiling (heat gain)

Question 8

what is the process called when gas becomes liquid

Answer 8

condensation (heat loss)

Question 9

what is the process called when liquid becomes solid

Answer 9

freezing (heat loss)

Question 10

what is the process called when solid becomes gas straightaway

Answer 10

sublimation (heat gain)

Question 11

what is the process called when gas becomes solid straightaway

Answer 11

deposition (heat loss)

Question 12

what is the forces of attraction between particles in solid liq and gas states

Answer 12

very strong, strong, negligible and weak respectively

Question 13

what is the arrangement of particles in solid liq and gas states

Answer 13

orderly, disorderly, disorderly respectively

Question 14

what is the motion of particles in solid liq and gas states

Answer 14

vibrate in fixed positions
slide past eo
move at great speed freely and independently

Question 15

what is the distance between particles in solid liq and gas

Answer 15

very close, close and very far apart respectively

Question 16

what does F stand for in FAMD

Answer 16

forces of attraction btwn particles

Question 17

what does A stand for in FAMD

Answer 17

arrangement of particles

Question 18

what does M stand for in FAMD

Answer 18

movement of particles

Question 19

what does D stand for in FAMD

Answer 19

distance between particles

Question 20

what occurs to particles during expansion

Answer 20

when heated, particles in solid state gain thermal energy, vibrate faster and move further apart, causing the solid to expand

Question 21

what happens to particles durin contraction

Answer 21

when cooled, solid particles lose thermal energy, vibrate slower and move closer together, causing the solid to contract

Question 22

do particles remain the same size when heat is gained or lost

Answer 22

yes

Question 23

what changes about the particles when an object gains heat or loses it

Answer 23

its movement and arrangement and space in between particles

Question 24

what does freezing point equal to

Answer 24

melting point

Question 25

what does boiling point equal to

Answer 25

condensation point

Question 26

why does temp remain constant during change of state

Answer 26

the thermal energy gained is used to overcome the forces of attraction between particles

Question 27

using the particulate model of matter, explain boiling

Answer 27

particles of the liquid gain thermal energy and vibrate faster and further apart, causing the forces of attraction between particles to become less strong. the heat gained allows particles to move freely and independently and rapidly in all directions

Question 28

why does temp stay constant during freezing

Answer 28

particles of the liquid lose thermal energy and vibrate slower and move closer together, while the forces of attraction between particles grow stronger. eventually, particles are in fixed motion and freezing occurs

Question 29

why does temp remain constant during melting

Answer 29

particles of the solid gain thermal energy and vibrate faster and move further apart, while the forces of attraction between particles weaken. eventually the particles can slide past each other

Question 30

using particulate model of matter, explain sublimation

Answer 30

particles of the solid gain thermal energy and vibate faster and move further apart while the forces of energy in between particles weaken. eventually, particles are able to move freely and independently and rapidly in all directions

Question 31

what is diffusion

Answer 31

the net movement of particles from region of higher concentration to lower concentration until equilibrium is reached

Question 32

does diffusion req energy

Answer 32

no

Question 33

can diffusion occur in the presence of a partially permeable membrane

Answer 33

yuh

Question 34

explain how amoeba take in oxygen in ponds using diffusion

Answer 34

the water in the pond is a region of higher oxygen concentration as compared to the amoeba cell which is a region of lower oxygen concentration. so, oxygen diffuses from the pond into the amoeba cell ACROSS THE PARTIALLY PERMEABLE MEMBRANE by diffusion

Question 35

explain diffusion withouht presence of partially permeable membrane

Answer 35

the concentration of durian scent is higher in the kitchen while the bedroom is a lower region of durian scent concentratoin. so, durian scent particles diffuse from the kitchen into the bedroom by diffsion