P3 Particle Model Flashcards

1
Q

How much mass a substance contains compared to it’s volume is…

A

density

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2
Q

State the equation which links density, mass and volume

A

ρ=m/v

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3
Q

Name the change of state when a liquid becomes a solid

A

freezing

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4
Q

Name the change of state when a solid becomes a liquid

A

melting

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5
Q

Name the change of state when a liquid becomes a gas

A

evaporation

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6
Q

Name the change of state when a gas becomes a liquid

A

condensation

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7
Q

Name the change of state when a solid becomes a gas (without passing through liquid form)

A

sublimation

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8
Q

Changes of state are caused by the amount of _________ a substance has

A

energy

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9
Q

State changes are examples of ___________ change

A

physical

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10
Q

Physical changes are ones which can be _____________

A

reversed

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11
Q

A change which creates new products and cannot be reversed is _________ change

A

chemical

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12
Q

The energy stored inside a system by the particles which make it up is known as ____________ energy

A

internal

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13
Q

What is internal energy?

A

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

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14
Q

Energy stored within moving objects is __________

A

kinetic

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15
Q

Energy stored in particles because of their position is…?

A

potential energy

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16
Q

Particles wich are further apart have _________ potential energy

17
Q

The energy needed to raise the temperature 1 kg of a material by 1ᵒC is the __________

A

specific heat capacity

18
Q

The average kinetic energy of particles is known as the ___________

A

temperature

19
Q

The amount of energy required to change the state of one kilogram of a substance with no change in temperature is the …?

A

specific latent heat

20
Q

Latent heat of fusion is for changing…?

A

solid to liquid

21
Q

Latent heat of vaporisation is for changing….?

A

liquid to vapour (gas)

22
Q

Increasing temperature ______________ pressure in a gas if volume is constant

23
Q

The force exerted by gas on a surface as the particles collide with it is known as….?

A

gas pressure

24
Q

State the units of density

25
State the units of volume
m^3
26
Why doesn't temperature increase during melting?
Energy is being used to weaken forces between particles
27
Why doesn't temperature increase during evaporation
Energy is being used to weaken forces between particles
28
Why does temperature of a substance increase as it is heated?
Particles gain more kinetic energy and temperature is a measure of kinetic energy
29
Particles are arranged regularly in a ….?
solid
30
Particles are arranged randomly, but touching in a …?
liquid
31
Particles move around randomly in a ….?
gas
32
Sketch the heating curve for water
33
Draw a particle diagram for a solid
34
Draw a particle diagram for a liquid
35
Draw a particle diagram for a gas