Matter cannot be created or destroyed by a chemical change. During a chemical change (reaction), the atoms of one or more substances (reactants) simply undergo some "rearrangements". The result of these rearrangements is the formation of new, different substances (products). All of the original atoms are still present. The total mass of the reactants before a chemical reaction will equal the total mass of the products after the chemical reaction.
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To determine experimentally whether mass is conserved in a particular set of chemical reactions.
MATERIALS AND EQUIPMENT
Beral pipets, Plastic bottles with caps, 10 mL graduated cylinder, Balances, White vinegar, Phenolphthalein, Silver nitrate, Sodium chloride solution, Alka seltzer tablets, Sodium hydroxide (1M solution)
Your download will include handouts that are ready to be copied and passed out to your students. Handouts include: Title, Purpose, Introduction, Materials, Safety Precautions, Procedure, Analysis Questions, Student Data Pages, Answers to all Questions, and Teacher Preparation Notes.
You will receive both an editable Word document and a pdf of this lab.
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