Chemistry, 23.07.2019 13:50 mariaaalopezz
Which is a sign of a chemical change? a. ice cream left at room temperature melts. b. calcium chloride is dissolved in h2o and disappears. eliminate c. paint on a freshly painted wall dries and is no longer sticky. d. when h2s gas is bubbled into a lead acetate solution, a precipitate forms?
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Which is a sign of a chemical change? a. ice cream left at room temperature melts. b. calcium chlor...
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