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Materials
Quiz: How much do you know about permanent magnets?
Test your knowledge of the science of magnetism and the four types of permanent magnets.
by Andy Brunning, special to C&EN
May 7, 2025
Before you take our quiz on Periodic Graphics: Permanent magnets explained, make sure you check out our Periodic Graphic for some helpful hints.
Which component of an atom contributes the most to the atom’s magnetic field because of a quantum property called spin?
Which of the following elements does not show permanent magnetism at room temperature?
Which type of permanent magnet accounts for over 80% of magnets produced worldwide by weight?
Which type of magnet accounts for over 60% of permanent magnet sales worldwide?
Which type of permanent magnet is the strongest?
Which type of permanent magnet costs the most per kilogram?
Which type of permanent magnet operates at the highest temperature?
Chemical & Engineering News
ISSN 0009-2347
Copyright © 2025 American Chemical Society
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