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sec 1 science 2023 > chapter 7 > Flashcards

chapter 7 Flashcards

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Biology 101 flashcards
1
Q

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

A

the Brownian motion

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2
Q

what is the volume of solid liq and gas

A

definite, definite and indefinite respectively

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3
Q

what is mass of solid liq and gas

A

all are definite

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4
Q

can solid liq gas be compressed

A

no no and yes respectively

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5
Q

what kind of shape do solid liq and gas have

A

definite, indefinite, and indefinite respectively

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6
Q

what is the process called when solid becomes liquid

A

melting (heat gain)

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7
Q

what is the process called when liquid becomes gas

A

evaporation and boiling (heat gain)

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8
Q

what is the process called when gas becomes liquid

A

condensation (heat loss)

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9
Q

what is the process called when liquid becomes solid

A

freezing (heat loss)

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10
Q

what is the process called when solid becomes gas straightaway

A

sublimation (heat gain)

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11
Q

what is the process called when gas becomes solid straightaway

A

deposition (heat loss)

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12
Q

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

A

very strong, strong, negligible and weak respectively

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13
Q

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

A

orderly, disorderly, disorderly respectively

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14
Q

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

A

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

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15
Q

what is the distance between particles in solid liq and gas

A

very close, close and very far apart respectively

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16
Q

what does F stand for in FAMD

A

forces of attraction btwn particles

17
Q

what does A stand for in FAMD

A

arrangement of particles

18
Q

what does M stand for in FAMD

A

movement of particles

19
Q

what does D stand for in FAMD

A

distance between particles

20
Q

what occurs to particles during expansion

A

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

21
Q

what happens to particles durin contraction

A

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

22
Q

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

A

yes

23
Q

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

A

its movement and arrangement and space in between particles

24
Q

what does freezing point equal to

A

melting point

25
Q

what does boiling point equal to

A

condensation point

26
Q

why does temp remain constant during change of state

A

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

27
Q

using the particulate model of matter, explain boiling

A

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

28
Q

why does temp stay constant during freezing

A

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

29
Q

why does temp remain constant during melting

A

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

30
Q

using particulate model of matter, explain sublimation

A

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

31
Q

what is diffusion

A

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

32
Q

does diffusion req energy

A

no

33
Q

can diffusion occur in the presence of a partially permeable membrane

A

yuh

34
Q

explain how amoeba take in oxygen in ponds using diffusion

A

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

35
Q

explain diffusion withouht presence of partially permeable membrane

A

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

sec 1 science 2023 (7 decks)

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