Conservation Of Mass Lab

Grade Levels
9th - 12th
Resource Type
Formats Included
  • Zip
6 pages
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This lab on the Law of Conservation of Mass can be used with physical science or chemistry classes. The lab activity will provide your students with a clear visual and hands-on experiment dealing with the Law of Conservation of Mass. The activity includes three mini-experiments. In each, students will collect quantitative data that proves that mass is conserved during chemical changes.


To determine experimentally whether mass is conserved in a particular set of chemical reactions.


  • Beral pipets: Thin-stem and Jumbo stem
  • Plastic bottles with caps
  • 10 mL graduated cylinder
  • Balances
  • White vinegar
  • Phenolphthalein
  • Silver nitrate
  • Sodium chloride solution
  • Alka seltzer tablets
  • Sodium hydroxide (1M solution)

What will the students be doing??

  • Students will carry out three mini-experiments to prove the Law of Conservation of Mass.
  • First experiment: Acid/Base Reaction
  • Second experiment: The Formation of a Precipitate
  • Third Experiment: The Formation of a Gas
  • In each experiment, students will visually see that a chemical reaction is taking place.
  • Students will collect quantitative data to prove that mass is conserved during a chemical reaction.

What is included in this product?

  • Editable lab handouts that are ready to be printed and passed out to your students.
  • Complete instructions.
  • Teacher Guide containing tips, tricks, and suggestions.
  • Complete Answer Key
  • Everything you need for the successful completion of this lab.

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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Total Pages
6 pages
Answer Key
Teaching Duration
1 hour
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