Topic 14 Flashcards

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1
Q

gas to solid/ solid tp gas

A

sublimation

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2
Q

soild

A

close together, regular pattern
vibrate in fixed position
low energy

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3
Q

liquid

A

close together randomly arranged
vibrate and move around each other
medium energy
(diagram takes up more than 50% of space, touching)

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4
Q

gas

A

far apart, randomly arranged
vibrate and moves quickly in any direction
high energy

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5
Q

why does ice float on watre

A

its less dence
anomply since solids are menat to hace a higer density than liquid

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6
Q

absolute zero

A

molecles have no kenetic energy at -273 lowest temp
since you nat have nergaitve energy this will be the lowest

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7
Q

space

A

absolute zero, vacum

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8
Q

-273 degrees

A

Ok (kelivin)

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9
Q

O degrees

A

273 K

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10
Q

100 degrees

A

373 K

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11
Q

K to C

A
  • 273
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12
Q

C to K

A

+273

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13
Q

who doesnt temp incraese when state chnages

A

extra energy is making particles break bonds

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14
Q

spesific heart capacity

A

amount of energy required to raise the temp of 1kg by 1 degree C

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15
Q

why is cheese hotter than crust

A

The cheese is hotter than the crust when it comes out of the oven as it has a higher specific heat capacity.

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16
Q

spesific latenet heat

A

how much energy by kg needed

17
Q

spesific latet heat of fusion

A

between solid and liquid, freezing & melting

18
Q

how to improve specific heat capacity

A
  • insulate
  • ## stirrer
19
Q

specific latent heat

A

how much energy per kg of substance is needed to change state

20
Q

spesific latent heat of vapourisation

A

between liquid and gas

21
Q

temperature

A

the amount a measure of the average kinetic energy of its particles

22
Q

presuure

A

caused by colliions between particles and cointainer
container exerts force on the sides