6) Conservation of Mass-SHEET

Explain the Law of Conservation of Mass in your own words and provide an example from the passage.

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Why is it important to balance chemical equations according to the Law of Conservation of Mass?

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Evaluate the statement: 'In a chemical reaction, the mass of the products is always greater than the mass of the reactants.' Is this statement true or false? Justify your answer.

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Which of the following best describes the Law of Conservation of Mass?

• Matter cannot be created or destroyed.

• The mass of the reactants is always less than the mass of the products.

• Chemical reactions do not involve changes in mass.

• Energy is conserved in chemical reactions.

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What is the main reason chemical equations must be balanced?

• To ensure the mass of reactants equals the mass of products.

• To make the equation look neat and organized.

• To show the energy changes in the reaction.

• To identify the reactants and products.

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In the photosynthesis equation provided, which element has the same number of atoms on both sides of the equation?

• Carbon

• Nitrogen

• Sulfur

• Phosphorus

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Which of the following is an example of a balanced chemical equation?

• 2H2 + O2 → 2H2O

• H2 + O2 → H2O

• 2H2 + O2 → H2O2

• H2 + 2O2 → H2O

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