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Physics > p14 > Flashcards

p14 Flashcards

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1
Q

describe the particles in a solid

A

touching and vibrating

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2
Q

give two properties of solids

A

they keep the shape and usually cannot be compressed

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3
Q

describe the particles in a liquid

A

touching and moving past each other

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4
Q

give three properties of liquid

A

They flow, take the shape of the container and cannot usually be compressed

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5
Q

describe the particles in a gas

A

far apart and moving round quickly

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6
Q

give two properties of gases

A

they are compressible and expand to fill their container

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7
Q

what is kinetic theory?

A

everything is made from tiny particles

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8
Q

what holds the particles in a solid closely together?

A

Force of attraction

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9
Q

what equipment where do you need to find the density of a liquid?

A

beaker, balance, measuring cylinder

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10
Q

what equipment would you need to find the density of an irregular shaped solid

A

balance, measuring cylinder, displacement can

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11
Q

what is it called? When a gas turns into a liquid?

A

condensing

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12
Q

what is it called? When a solid turns straight into a gas?

A

sublimation

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13
Q

what is true about mass during changes of state?

A

mass is condseved

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14
Q

are Changes of state, physical changes or chemical changes

A

physical changes

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15
Q

why are changes of state physical processes?

A

The material recovers its original properties if the change is reversed

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16
Q

what happens if you heat a system?

A

The energy stored within the system will change and raise its temperature or produce changes of state

17
Q

define specific heat capacity

A

The amount of energy it takes to increase the temperature by 1 kg of a substance by 1 degree

18
Q

define specific latent heat

A

The amount of energy it takes to make 1 kg of a substance changes state

19
Q

what is the purpose of thermal insulation?

A

reducing unwanted energy transfers

20
Q

what equipment is needed to obtain a temperature time graph for melting ice

A

boiling tube, thermometer,beaker, tripod, gauze , kettle, Bunsen burner, stop clock

21
Q

what is the pressure of a gas due to?

A

forces on the wall of a container caused by the moving particles, setting the walls

22
Q

what happens to the pressure produced by fixed mass of gas at constant volume of temperature increases and why?

A

it increases because the velocity of the particles increase

23
Q

what is true about particles at absolute zero

A

they are not moving

24
Q

how do you convert from Kelvin to Celsius?

A

subtract, 273

25
Q
A

Physics (16 decks)

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