Chemistry, 14.07.2019 18:20 vaehcollier
Which procedure did early chemists use to determine which substances were elements? a. they observed the substances that made up individual atoms. b. they physically broke down the elements they discovered. c. they broke down materials by chemical means. d. they observed the way the materials looked.
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Which procedure did early chemists use to determine which substances were elements? a. they observe...
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