5 Questions
Which particles make up an atom?
Protons, neutrons, and electrons
What distinguishes one chemical element from another?
The number of protons
What defines the isotope of an element?
The number of neutrons
Why can't humans see atoms with conventional microscopes?
Atoms are too small to be seen
Where is the majority of an atom's mass located?
In the nucleus
Test your knowledge of atoms and elements with this quiz! Learn about the structure of an atom, the role of protons, neutrons, and electrons, and discover how elements are distinguished by their atomic numbers. Challenge yourself and see how much you know about sodium, copper, and more!
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