Law of Conservation of Mass

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What is the Law of Conservation of Mass?

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The Law of Conservation of Mass states that in a closed system, the mass of the reactants must equal the mass of the products in a chemical reaction.

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How does the Law of Conservation of Mass apply to chemical reactions?

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In chemical reactions, the total mass of the substances involved before the reaction must equal the total mass of the substances after the reaction.

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What is an example of a substance that can be measured to demonstrate the Law of Conservation of Mass?

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Smoke can be measured to demonstrate the Law of Conservation of Mass, as it has mass that can be accounted for in a reaction.

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If 3 kg of smoke is produced in a reaction, what does this imply about the mass of the reactants?

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It implies that the mass of the reactants must also total 3 kg, along with any other products formed.

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True or False: The mass of the reactants is always equal to the mass of the products in a chemical reaction.

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True.

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What is the significance of measuring the mass of reactants and products in a chemical reaction?

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Measuring the mass of reactants and products helps verify the Law of Conservation of Mass and ensures that no mass is lost or gained during the reaction.

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How many grams of oxygen are needed to demonstrate conservation of mass in a specific example?

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7 grams of oxygen are needed.

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What is the mass of sliced apple shown in the example of conservation of mass?

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230 grams.

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What happens to mass during a physical change, according to the Law of Conservation of Mass?

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The mass remains constant; it does not change during a physical change.

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Can the Law of Conservation of Mass be applied to physical changes?

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Yes, the Law of Conservation of Mass applies to both chemical and physical changes.