Thermodynamics W1

• Thermodynamics

  • the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, the relationships between all forms of energy.
• Heat

  • The energy transferred by radiation, conduction, convection, and/or conduction.
  • Is a form of energy transfer between two objects as a result of their difference in temperature.
  • It generally flows from a hotter object to a cooler one until thermal equilibrium is reached.
  • represented by the letter 'q'
• Thermodynamics

  • is the study of energy or heat flow that accompanies a chemical reaction and/or physical transformations.
• Thermal equilibrium is when the temperature of the system is constant and the particles are in thermal equilibrium
• The system is the part of the universe being studied or which attention is focused
• The surrounding include everything else in the universe.
• exothermic reaction is a reaction for which the overall standard enthalpy change ΔH⚬ is negative. Exothermic reactions usually release heat.
• endothermic process is a chemical or physical process that absorbs heat from its surroundings. In terms of thermodynamics and thermochemistry, it is a thermodynamic process with an increase in the enthalpy H (or internal energy U) of the system. In an endothermic process, the heat that a system absorbs is thermal energy transfer into the system.
• Work is the force done on a certain object