Physics Paper 1 Particle Model of Matter 9-1

What is the equation for density?
P (density) = mass / volume
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Describe the structure of a Solid
Strong forces of attraction. Regular fixed arrangement. Density is the highest of the 3 states. Only vibrate in fixed positions.
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Describe the structure of a Liquid
Weak forces of attraction. Close particles that can move over another in irregular arrangements. 2nd most dense state. Move in random directions at low speeds.
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Describe the structure of a Gas
No forces of attraction. Lowest density. Particles are free to move around and travel in random directions at a range of high speeds
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What is internal energy?
The total energy that its particles have in their kinetic and potential energy stores
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What increases internal energy? What does this do to the system?
Heat, and the system changes state/changes temperature.
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What are the changes of state?
Solid - Freezing/Melting - Liquid - Boiling/Condensing - Gas
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What is the equation for Specific Latent Heat?
L = Energy / Mass
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What is Specific Latent Heat?
Amount of energy needed to change 1kg of a substance from one state to another without changing its temperature.
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What is the specific latent heat for changing between a solid and liquid?
Specific latent heat of vaporistation
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What happens when you increase the temperature of a gas?
The average speed of particles increase
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Pressure and volume are _______ ________
Inversely proportional
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Other cards in this set

Card 2

Front

Describe the structure of a Solid

Back

Strong forces of attraction. Regular fixed arrangement. Density is the highest of the 3 states. Only vibrate in fixed positions.

Card 3

Front

Describe the structure of a Liquid

Back

Preview of the front of card 3

Card 4

Front

Describe the structure of a Gas

Back

Preview of the front of card 4

Card 5

Front

What is internal energy?

Back

Preview of the front of card 5
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