Chemistry

• volume = height x width x length
• Diffusion:

  • Diffusion occurs when particles spread
  • Diffusion happens when the particles are free to move (gases and for particles dissolved in solutions)
  • When particles move faster, the rate of diffusion increases
  • Diffusion is the movement of particles from an area of high concentration to an area of high to low concentration until they are evenly spread out
• Air Pressure:

  • Air pressure is the force of particles hitting a surface
  • Air pressure refers to the volume of air in a particular environment, with greater volumes creating higher pressures.
• Why does the can suddenly get squashed and crushed it when a vacuum pump has been attached to it?

  The vacuum sucked out all the air particles from inside the can and the air particles on the outside collides with the can and crushes it.