Topic 3 -Particle model of matter

• What is density?


  How much mass a substance has per unit of its volume.
• How do you calculate Density?

  mass/volume

  
• How do you calculate the volume of an irregular object?

  Use an Eureka Can
• How do you calculate the volume of a regular object?

  calculate the area of the object.
• What is vaporization?


  Energy change when a substance changes between a gas to a liquid.
• What is fusion?


  energy change when a substance changes between a solid to a liquid.
• What is the equation for Specific latent heat?

  Energy = mass x specific latent heat

  
• How do you calculate pressure?

  pressure = force/area

  
• What factors affect gas pressure?

  temperature, volume, concentration