# Particle Model of Matter

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• Created by: lh1002
• Created on: 29-05-16 12:14
What is the equation for density?
density = mass/volume-- (p=m/V)
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What is the equation for Boyle's Law?
Initial pressure x initial volume = final pressure x final volume-- (p¹V¹ = p²V² or pV= constant )
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What is specific heat capacity?
The amount of energy needed to change the temperature of 1kg by 1°C
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What is Boyle's Law?
The fact that increasing the volume in which a gas is contained, at constant temperature, can lead to the decrease in pressure.
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Describe the Boyle's law pressure and volume relationship.
When the volume decreases, pressure increases. The pressure of a gas is directly proportional to volume
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What is specific latent heat?
The amount of energy needed to change the state of 1kg of a substance with no temperature change
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What is the equation for specific heat capacity?
Energy transferred= mass x SHC x temperature change-- (E=mc0)
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What is density?
The mass per unit volume
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What is the equation for specific latent heat?
Energy= mass x SLH-- (E=mL)
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What are the units for density?
g/cm³
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How do you find the density of an irregular solid?
Find mass of object, fill eureka can with water until just below spout, put object in water- make sure it is fully submerged, measure amount of water to come out- this is the volume, divide the mass by the volume
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Explain the effect of changing the temperature on the pressure of a gas, held at constant volume.
As the temperature increases, as does the kinetic energy. This means the particles move faster, consequently they hit the walls of the container more often exerting a force and applying a pressure.
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What is the relationship between the particles in a solid?
The particles vibrate around a fixed point. There is a strong force of attraction between the particles and they are very close together.
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What is the relationship between the particles in a liquid?
The particles are very close together but can move in any direction. They don't keep a fixed shape.
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What is the relationship between the particles in a gas?
Particles are very far apart and move quickly in all directions. They often collide with each other and because they are far apart they can be easily squashed.
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What is kinetic theory?
The kinetic particle theory explains the properties of the different states of matter. The particles in solids, liquids and gases have different amounts of energy.
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Why does the temperature of a liquid decrease as it evaporates?
The kinetic energy of a molecule is proportional to its temperature, evaporation happens more quickly at higher temperatures. As the faster-moving molecules escape, the molecules left have lower average kinetic energy, and the temperature decreases
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What is Brownian Motion?
Smoke particles move in all directions without colliding. This is due to collisions of invisible air molecules with larger particles of smoke. Heating makes the smoke particles' motion more violent- the increased speed of the invisible air molecules
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What is pressure measured in?
Pascals, Pa
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## Other cards in this set

### Card 2

#### Front

What is the equation for Boyle's Law?

#### Back

Initial pressure x initial volume = final pressure x final volume-- (p¹V¹ = p²V² or pV= constant )

### Card 3

#### Front

What is specific heat capacity?

### Card 4

#### Front

What is Boyle's Law?

### Card 5

#### Front

Describe the Boyle's law pressure and volume relationship.