First Law of Thermodynamics

Cards (11)

  • Thermodynamics - study of relations between heat, work, temperature, and energy.
  • First Law: energy cannot be created nor destroyed in an isolated system.
  • System - quantity of matter or region for a study
  • Surroundings - region outside the system
  • Boundary - real or imaginary; separates system from surroundings
  • Open system - exchange of heat and matter; matter can enter from or escape to the surroundings
  • Energy - capacity to do work, directing change resulting from a process.
  • Closed System - matter is not allowed to leave; heat only
  • Isolated System - does not exchange matter nor energy with its surroundings
  • Exothermic Reaction - releases energy in form of heat (product)
  • Endothermic Reaction - absorbs energy from surroundings in form of heat (reactant)