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Physics year 9 > P3 > Flashcards

P3 Flashcards

Particle model

1
Q

what is the particle arrangement in a solid?

A
  • Packed in a regular structure
  • Strong forces hold in place so cannot move
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2
Q

what is the particle arrangement in a liquid?

A
  • close together, forces keep contact but can move about
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3
Q

what is the particles arrangement in a gas?

A
  • separated by large distances
  • weak forces so constantly randomly moving
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4
Q

what is the equation to find density?

A

mass DIVIDED BY volume

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5
Q

what is internal energy?

A

The total kinetic energy and potential energy of all the particles in a system

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6
Q

what is it called when a solid turns into a liquid?

A

melting

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7
Q

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

A

boiling / evaporating

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8
Q

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

A

condensation

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9
Q

what is it called when a solid turns into a gas?

A

sublimation

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10
Q

what does the conservation of mass state?

A

When substances change state, mass in conserved

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11
Q

what is the unit for density?

A

kilograms per metre cubed (kg/m3)

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12
Q

what is the unit for mass?

A

Kilograms (kg)

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13
Q

what is the unit for volume?

A

metres cubed (m3)

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14
Q

What is the unit for specific latent heat?

A

joule per kilogram (J/kg)

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15
Q

what is the unit for change in thermal energy?

A

Joules (J)

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16
Q

what is the equation for working out change in thermal energy?

A

mass x specific heat capacity x temperature change

17
Q

what is specific heat capacity?

A

Energy needed to raise 1kg of substance by 1 degree Celsius

18
Q

what is specific latent heat?

A

Energy needed to change 1kg of a substance’s state

19
Q

what is specific latent heat of Fusion?

A

Energy needed to change 1kg of a solid into 1kg of liquid at the same temperature

20
Q

what is specific latent heat of vaporisation?

A

Energy needed to change 1kg of liquid into 1kg of gas at the same temperature

Physics year 9 (1 decks)

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