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Chemistry, 10.07.2019 16:30 moniquejg1800
Which set of procedures and observations indicates a chemical change? a) ethanol is added to an empty beaker and the ethanol eventually disappears. b) a solid is gently heated in a crucible and the solid slowly turns to liquid. c) large crystals are crushed with a mortar and pestle and become powder. d) a cool, shiny metal is added to water in a beaker and rapid bubbling occurs.
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Which set of procedures and observations indicates a chemical change? a) ethanol is added to an emp...
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