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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Why are atoms considered conserved in a chemical reaction?

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Atoms are conserved in a chemical reaction because they are neither created nor destroyed; they are simply rearranged to form new substances.

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What does it mean if a chemical reaction shows a change in mass?

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If a chemical reaction shows a change in mass, it indicates that the reaction is not balanced, meaning that the number of atoms on the reactant side does not equal the number on the product side.

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How can you determine if a chemical reaction is balanced?

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A chemical reaction is balanced if the number of atoms of each element is the same on both the reactant and product sides.

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What is a reactant in a chemical reaction?

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A reactant is a substance that undergoes change during a chemical reaction, appearing on the left side of the equation.

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What is a product in a chemical reaction?

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A product is a substance that is formed as a result of a chemical reaction, appearing on the right side of the equation.

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What does it indicate if gas is produced in a chemical reaction?

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The production of gas in a chemical reaction indicates that a chemical change has occurred, often resulting in a change of state.

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What is the significance of balancing chemical equations?

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Balancing chemical equations is significant because it ensures that the Law of Conservation of Mass is upheld, showing that mass is conserved during the reaction.

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What is an example of a balanced chemical equation?

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An example of a balanced chemical equation is: 2H2 + O2 → 2H2O, where the number of hydrogen and oxygen atoms is the same on both sides.

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What happens to the mass of reactants during a chemical reaction?

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The mass of the reactants remains constant and is equal to the mass of the products after the reaction.