Observations before interaction observations after interaction was mass conserved? proof of a chemical reaction steel wool + oxygen (fire) egg + heat water + heat on the table below, record your observations before and after the interactions and note if mass was conserved. describe the changes in properties that prove a chemical reaction occurred. the first row is an example. observations before interaction observations after interactionwas mass conserved? proof of a chemical reactionsteel wool + oxygen (fire) egg + heat water + heat zinc + hydrogen chloride sodium hydroxide + copper sulfate plz it is not multiple choice
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