Chapter 5 Vocabulary Use the following link to study the vocab words: http://quizlet.com/43977971/chapter-5-thermochem-flash-cards/
Thermodynamics-Deals with the relations ship of heat transfer between other forms of energy. Study of the effects of work, heat and energy on a system. The transfer of energy through heat. The way heat is used as an energy resource
Thermochemistry-The study of heat changes that accompany chemical reactions and phase changes.
Kinetic energy-Energy of motion
Work-A result of a force moving an object a certain distance. Force times distance.
Heat- Energy that is transformed as a consequence of temperature differences
Internal energy- Energy due to the motion (jiggling) of molecules. An increase in this energy results in the rise in temperature or a change in phase of an object.
First law of thermodynamics-Heat is a form of energy which can be neither created nor destroyed but can be changed in form
Endothermic-of a chemical reaction or compound) occurring or formed with absorption of heat
Exothermic-Chemical Reaction in which energy is primarily given off in the form of heat
Enthalpy-A measure of the total energy of a thermodynamic system (a thermodynamic potential). It includes the internal energy, which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure
Enthalpy of a reaction- the amount of energy absorbed or released by a chemical reaction
Molar heat capacity- The energy required to raise the temperature of one mole of a substance by one degree Celsius
Specific heat- The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree celsius.
Hess's law- If a series of reactions are added together, the enthalpy change for the total reaction is the sum of the enthalpy changes for the individual steps.
Enthalpy of formation- The enthalpy change for a reaction in which one mole of a compound is formed from its elements in
Standard enthalpy change -standard states.The total heat produced or absorbed by a system when reactants in their standard states change to products in their standard states under STP conditions.
Thermodynamics-Deals with the relations ship of heat transfer between other forms of energy. Study of the effects of work, heat and energy on a system. The transfer of energy through heat. The way heat is used as an energy resource
Thermochemistry-The study of heat changes that accompany chemical reactions and phase changes.
Kinetic energy-Energy of motion
Work-A result of a force moving an object a certain distance. Force times distance.
Heat- Energy that is transformed as a consequence of temperature differences
Internal energy- Energy due to the motion (jiggling) of molecules. An increase in this energy results in the rise in temperature or a change in phase of an object.
First law of thermodynamics-Heat is a form of energy which can be neither created nor destroyed but can be changed in form
Endothermic-of a chemical reaction or compound) occurring or formed with absorption of heat
Exothermic-Chemical Reaction in which energy is primarily given off in the form of heat
Enthalpy-A measure of the total energy of a thermodynamic system (a thermodynamic potential). It includes the internal energy, which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure
Enthalpy of a reaction- the amount of energy absorbed or released by a chemical reaction
Molar heat capacity- The energy required to raise the temperature of one mole of a substance by one degree Celsius
Specific heat- The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree celsius.
Hess's law- If a series of reactions are added together, the enthalpy change for the total reaction is the sum of the enthalpy changes for the individual steps.
Enthalpy of formation- The enthalpy change for a reaction in which one mole of a compound is formed from its elements in
Standard enthalpy change -standard states.The total heat produced or absorbed by a system when reactants in their standard states change to products in their standard states under STP conditions.