Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 6 - Thermochemistry - Questions & Problems - Page 262: 6.1

Answer

Please see the work below.

Work Step by Step

System: System is that part of the universe with a definite boundary that is under investigation. Surrounding: The part of the universe other than the system. Open System: The system that exchanges matter but not energy with the surrounding is called an open system. Hot water taken in an open tumbler is an example of an open system. Isolated System: The system that neither exchanges matter nor energy with the surrounding is called an isolated system. Hot tea in a thermos flask is an example of an isolated system. Thermal energy: When atoms and molecules move faster they collide with each other and produce heat. This type of energy is called thermal energy. Chemical energy: Reactions of molecules or atoms involve various types of energy changes. The energy stored in a molecule or an atom that is released during a chemical process is called chemical energy. Potential energy: The energy that arises in an object due to its position relative to another state is called potential energy. Kinetic energy: The energy acquired by a substance due to its motion is called kinetic energy. Law of conservation of energy: The energy cannot be created or destroyed. It can be transformed from one form to another only.
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