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Separating MixturesChemistryElements, Compounds, and MixturesPure SubstancesShake It Up: MixturesColloids: Somewhere in BetweenSeparating Mixtures One of the most important things that chemists do…
Who Invented Chemistry?ChemistryWhy Study Chemistry?Why Do We Need Chemistry?What Have I Gotten Myself Into?This Stuff Is Really Fun!Who Invented Chemistry?Succeeding Where Others Have Failed If…
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(Encyclopedia) Rustin, Bayard, 1910–87, African-American civil-rights leader, b. West Chester, Pa. He attended three colleges but did not obtain a degree. A Quaker, he was imprisoned as a…
