Flashcards
Energy Changes in Chemical and Nuclear Reactions
Cards in this deck (17)
- 1Thermochemistrythe study of energy changes during physical or chemical changes in matter
- 2energy SI unitthe ability to do work
J
Joules - 3Work SI UnitThe energy transferred to an object by a force that causes the object to move
- 4Potential Energythe energy due to its position or composition of the object
- 5Kinetic Energythe energy of motion
- 6thermal energythe total quantity of kinetic and potential energy in a substance
- 7heatthe transfer of thermal energy from a warm object to a cooler object
- 8temperaturea measure of a the average kinetic energy of entities in a substance
- 9chemical systema group of reactants and products being studied
- 10surroundingsall the matter that is not part of the system
- 11open systemall energy or molecules can leave and go as they please
- 12closed systemcan exchange energy but no matter with its surrounding
- 13isolated systemneither matter nor energy can move into or out of the system
- 14exothermicreleasing energy to the surrounding
- 15endothermicabsorbing energy from the surroundings
- 16fusioncombining two or more nuclei of low atomic mass to form a heavier, more stable nucleus
- 17fissionusing a neutron to split a nucleus of high atomic mass into two nuclei with smaller masses