Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 6 - Thermochemistry - Active Learning Questions: 1


Metal samples are colder than plastic pieces.

Work Step by Step

The system’s temperature comes from various contributions, for example, translational energy, irrational energy and rotational energy. The translational kinetic energy is dependent of the molecules or atoms available in the system. For example, in metals, the metal particles are random and regular as compared to molecules available in plastic. Also, metal has randomly arranged atoms while in the plastic, the sample has a regular molecular arrangement. Because of the less random arrangement of metal atoms, it has less contribution to the kinetic energy, making the metal to sense colder as compared to the plastic sample.
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