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Law of Conservation of Mass


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    The Science House

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Law of Conservation of Mass

In this chemistry activity, learners explore whether matter is created or destroyed during a chemical reaction. They will compare the weight of various solutions before and after they are mixed. Learners will also write balanced equations for the reactions in the experiment and use a solubility chart to predict the identity of the insoluble product.

Quick Guide


Preparation Time:
30 to 45 minutes

Learning Time:
30 to 45 minutes

Estimated Materials Cost:
$5 - $10 per group of students

Age Range:
Ages 11 - 18

Resource Types:
Activity, Experiment/Lab Activity

Language:
English

Materials List (per group of students)


  • solutions of NaOH, CuSO4, NH4OH, and Na2CO3 (or solutions made with Drano, Bluestone algaecide, ammonia, and washing soda)
  • 4 graduated cylinders or 4-2 oz plastic cups
  • 3 150-mL beakers or 3-5 oz plastic cups
  • balance

Subjects


  • Mathematics
    • Data Analysis and Probability
      • Data Analysis
      • Data Collection
  • Physical Sciences
    • Chemistry
      • Chemical Reactions
      • Solutions
    • Structure and Properties of Matter
      • Mass and Weight
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Gathering Data
      • Formulating Explanations
      • Communicating Results

Audience


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


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  • Free access with registration

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  • Thumbnail SAI II by rmerton on 2012-06-28