Which set of procedures and observations indicates a

Last updated: 8/5/2022

Which set of procedures and observations indicates a chemical change? a. Ethanol is added to an empty beaker and the ethanol eventually evaporates 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 gas bubbles rapidly appear