Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Atoms and Molecules
An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.
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32. Radioactive decay is a process in which an unstable _____ changes energy states and emits radiation.

a. electron
b. proton
c. nucleus
d. neutron
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