The Law of Conservation of Mass: Definition, Equation & Examples

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Which of the following statements best defines the law of conservation of mass?

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1. In a chemical reaction, 300 grams of reactant A are combined with 100 grams of reactant B. Both A and B react to completion. How much will the product weigh?

2. In a reaction, 25 grams of reactant AB breaks down into 10 grams of product A and an unknown amount of product B. Using the law of conservation of mass, how much does product B weigh?

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About This Quiz & Worksheet

This quiz and worksheet set will gauge your knowledge of the law of conservation of mass. Areas of focus include the best definition of the law of conservation of mass and the weights of products in a given reaction using the law of conservation of mass.

Quiz & Worksheet Goals

These tools address the following:

  • Definition of the law of conservation of mass
  • Finding weights of products in given problems
  • Difference between balanced and unbalanced equations
  • Identifying chemical equations obeying the law of conservation of mass

Skills Practiced

  • Knowledge application - use your knowledge to answer questions about the law of conservation of mass
  • Reading comprehension - ensure that you draw the most important information from the related physics lesson
  • Distinguishing differences - compare and contrast topics from the lesson, such as balanced and unbalanced chemical equations

Additional Learning

To learn more, review the corresponding lesson titled The Law of Conservation of Mass: Definition, Equation & Examples. This lesson will help you:

  • Define what the law of conservation of mass means
  • Understand the relationship between reactants and products
  • Identify the importance of the law to scientific breakthroughs
  • Know how to solve and balance chemical equations
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