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Some lessons learnt during high school chemistry remain with me, none more so than the distinction between a mixture and a compound: Mixture: a substance consisting of two or more substances mixed together without any chemical bonding between them. Compound: a substance that contains atoms of two or more chemical elements held together by chemical bonds. As a teenager I did not object to being termed “half caste.” For the past few years I have preferred, and asked others to use, …
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David J. Dean (1999) studied this question.
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