Practice LAW OF CONSERVATION OF MASS - 3.1.1 | 3. Atoms and Molecules | CBSE 9 Science
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LAW OF CONSERVATION OF MASS

3.1.1 - LAW OF CONSERVATION OF MASS

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define the Law of Conservation of Mass.

💡 Hint: Think about how mass behaves in reactions.

Question 2 Easy

What are reactants in a chemical reaction?

💡 Hint: Reactants are on the left side of a chemical equation.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the Law of Conservation of Mass state?

Mass can be created
Mass can be destroyed
Mass is conserved in reactions

💡 Hint: Think about whether mass can change during reactions.

Question 2

True or False: The total mass of products is less than reactants in a chemical reaction.

True
False

💡 Hint: Recall what happens during chemical reactions.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A chemical reaction produces 150g of product from 100g of substance A and 60g of substance B. How do you reconcile the 10g difference?

💡 Hint: Investigate what might prevent the reaction from following the law.

Challenge 2 Hard

In a combustion reaction, a sample of methane completely combusts using 64g of oxygen. Calculate the mass of products formed and discuss the implications.

💡 Hint: Apply conservation principles here to arrive at the solution.

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Reference links

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