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AP6994 - $38.90
In a chemical reaction, matter is neither created nor destroyed, except in this apparent contradictory experiment! Students will understand what is really measured when we “weigh” something on a balance. Students first conduct an experiment to verify...
AP7004 - $19.40
In a chemical reaction, matter is neither created nor destroyed-except in this discrepant event demonstration! Let students discover what is really measured when something is “weighed” on a balance. First carry out a gas producing reaction in a capped...
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