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acid
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acid; litmus
Learn about the properties of acids and bases along with the pH scale that measures them
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acid; litmus
Learn about the properties of acids and bases along with the pH scale that measures them
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Key People

Charles Gerhardt, engraving
Charles Gerhardt
French chemist
German Swedish chemist Carl Wilhelm Scheele, c. 1780.
Carl Wilhelm Scheele
Swedish chemist
Jean-Charles Galissard de Marignac
Swiss chemist