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  • brenda doyle

    Chemistry Lab: Conservation Of Mass. PURPOSE: To determine experimentally whether mass is conserved in a particular set of chemical reactions. $

  • Christina Dorsey

    Matter cannot be created or destroyed by a chemical change. During a chemical change (reaction), the atoms of one or more substances (reactants) undergo some "rearrangements". The "rearrangements" can create "different" subtances, but the original atoms are still there. The total mass of the reactants before the reaction will be the same as the total mass of the products after the chemical reaction (in a closed system).

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