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General Chemistry 2
First Law of Thermodynamics
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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)