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Description
Flashcards by Vita Mishtii, updated more than 1 year ago
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Created by Vita Mishtii
almost 12 years ago
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| Question | Answer |
| Thermochemistry | the study of energy changes during physical or chemical changes in matter |
| energy SI unit | the ability to do work J Joules |
| Work SI Unit | The energy transferred to an object by a force that causes the object to move |
| Potential Energy | the energy due to its position or composition of the object |
| Kinetic Energy | the energy of motion |
| thermal energy | the total quantity of kinetic and potential energy in a substance |
| heat | the transfer of thermal energy from a warm object to a cooler object |
| temperature | a measure of a the average kinetic energy of entities in a substance |
| chemical system | a group of reactants and products being studied |
| surroundings | all the matter that is not part of the system |
| open system | all energy or molecules can leave and go as they please |
| closed system | can exchange energy but no matter with its surrounding |
| isolated system | neither matter nor energy can move into or out of the system |
| exothermic | releasing energy to the surrounding |
| endothermic | absorbing energy from the surroundings |
| fusion | combining two or more nuclei of low atomic mass to form a heavier, more stable nucleus |
| fission | using a neutron to split a nucleus of high atomic mass into two nuclei with smaller masses |
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