[화학]화학반응의 에너지관계

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목차

Energy: 일을 할 수 있는 능력 (capacity to do work)
Energy Changes in Chemical Reactions
화학반응에서의 에너지 변화
Thermodynamics 열역학
Another form of the first law for DEsystem
시스템에 행해진 일
Chemistry in Action: Making Snow
6.4 화학반응의 엔탈피
엔탈피(H) 일정 압력과정에서 계 내외로의 열 흐름을 정량화 한 것
등...

본문내용

Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Energy: 일을 할 수 있는 능력 (capacity to do work)
Radiant (복사) energy comes from the sun and is earth’s primary energy source
Thermal (열) energy is the energy associated with the random motion of atoms and molecules
Chemical(화학) energy is the energy stored within the bonds of chemical substances
Nuclear(핵) energy is the energy stored within the collection of neutrons and protons in the atom
Potential(위치) energy is the energy available by virtue of an object’s position
6.1
Heat(열) is the transfer of thermal energy between two bodies that are at different temperatures. 두 물체간의 온도 차이에 의해 전달되는 열에너지
Energy Changes in Chemical Reactions
화학반응에서의 에너지 변화
Temperature(온도) is a measure of the thermal energy.
900C
400C
greater thermal energy
6.2
Temperature = Thermal Energy
Thermochemistry is the study of heat change in chemical reactions. 화학반응에서의 열 변화를 연구
The system (시스템)is the specific part of the universe that is of interest in the study.
Open
열린계
mass & energy
교환되는 종류:
Closed
닫힌계
energy
Isolated
고립계
nothing
SYSTEM
SURROUNDINGS
6.2
Exothermic (발열) process is any process that gives off heat transfers thermal energy from the system to the surroundings.
Endothermic (흡열) process is any process in which heat has to be supplied to the system from the surroundings.

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