internal energy & changes of state

• internal energy is the total energy stored by particles in a system
• internal energy is what?

  Total energy stored by particles in a system
• internal is the total energy what?

  Stored by particles in a system
• what is the total energy stored by particles in a system?

  internal energy
• what’s internal energy?

  total energy stored by particles in a system
• what’s internal energy again?!?

  total energy stored by particles in a system !!!!
• | internal energy

  • particles in a system vibrate or move around- they have energy in kinetic
  • & potential energy
  • energy in a system is stored by its particles
  • internal energy is the total energy particles have in their kinetic & potential energy stores
  • heating transfers energy to particles, increasing internal energy
  • leads to change in temperature or state. if temp changes, change depends on mass
  • change in state gives enough energy to break bonds in kinetic energy stores
• what does the extent of change when temperature is changed depend on?

  mass
• what does a change in state mean?

  that particles will have enough energy in kinetic energy stores to break bonds