Particle Model of Matter

Particle Model of Matter

1. Explains the three states of matter

   • Solid
     • Fixed, regular arrangement
     • High density
     • Vibrate slightly
   • Liquid
     • Particles can move past each other easily
     • Less dense
     • More energy than solids
   • Gas
     • Free to move independantly
     • low density
     • high energy

2. Density

   • Density = mass/volume
   • you can measure density by measuring water displacement with a eureka can then using the displaced water as your volume for the object

3. Internal energy

   • Internal energy is the energy the particles have as a combination of their kinetic and potential energy stores

4. specific latent heat

   • energy goes into breaking bonds instead of increasing temperature
   • The energy needed for 1 kg of a substance to change state
   • Energy = mass * specific latent heat

5. Pressure and gasses

   • When gasses collide with a container, pressure occurs as the net force pushes outwards
   • Pressure and volume are inversely proportional at a constant temperature

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