Extracted and refreshed from section 12 of the Handbook, includes information on magnets used in science and how to look after them, field line demonstrations, and some history of magnetism

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The reaction between iron and sulfur, to produce iron sulfide, is cited in many textbooks and other resources as a good demonstration of the difference between mixtures and compounds. A key distinguis.. more

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When the iron/sulfur mixture is heated, the sulfur melts and reacts with the iron exothermically to form iron(II) sulfide. This is an important demonstration that shows that the properties of a compou.. more

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Instructions on how to make apparatus to demonstrate Lenz's law.

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