internal energy

• What is internal energy?

  energy stored in a system by the particles that make up the system.
• What is internal energy a total of?

  Kinetic and potential energy.
• What is potential energy?

  Potential energy is the stored energy between particles due to their state.
• How do you calculate internal energy?

  kinetic energy + potential energy
• What does not change during a change of state?

  average kinetic energy/ temperature
• What is temperature?

  average kinetic energy of particles in a substance.
• What happens to forces of attraction when a change of state occurs?

  either are overcome or bonding particles together.
• Why does the temperature not change during a change of state?

  as the energy that is being supplied is either used to make bonds or break bonds rather than increase temperature.
• What happens to potential energy during freezing?

  Decreases
• What happens to potential energy during melting?

  increases