P3- PARTICLES

• What is the equation for density?

  Density = mass/volume
• What are solids and liquids incompressible?

  no gaps between paritcles
• What is density?

  mass per unit volume
• What is the equation for energy change of state?

  mass x specific latent heat
• What is the internal energy of an object?

  total kinetic and potential energy of all particles in a system
• Does the energy added at MP or BP cause the substance to increase in temp or change state?

  change state
• What does a change of state change and not change?

  CHANGES:

  internal energy

  NO CHANGE:

  temperature

  mass
• What is the latent heat of fusion?

  energy needed for substance to change from solid to liquid
• What is the latent heat of vapourisation?

  energy needed for a substance to change from liquid to gas
• Equation for fixed mass of gas at constant temperature?

  pressure x volume = constant
• What happens to the internal energy when work is done on a gas?

  Increases
• What is the unit of specific heat capacity?

  J/Kg°C