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 mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

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What are reactants in a chemical reaction?

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Reactants are the substances that are present at the start of a chemical reaction and undergo change.

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What are products in a chemical reaction?

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Products are the substances that are formed as a result of a chemical reaction.

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Which model best represents the Law of Conservation of Mass?

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Model A best represents the Law of Conservation of Mass, as it shows that the mass of reactants equals the mass of products.

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What is a chemical reaction?

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A chemical reaction is a process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

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What is the significance of coefficients in a chemical equation?

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Coefficients indicate the number of molecules or moles of a substance involved in a chemical reaction, helping to balance the equation according to the Law of Conservation of Mass.

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What is the difference between a reactant and a product?

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A reactant is a starting material in a chemical reaction, while a product is a substance formed as a result of the reaction.

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How can we demonstrate the Law of Conservation of Mass in a lab?

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We can demonstrate the Law of Conservation of Mass by conducting a closed chemical reaction and measuring the mass of reactants before and the mass of products after the reaction.

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

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The total mass of substances remains constant during a chemical reaction; it is conserved.

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What is an example of a chemical reaction that illustrates the Law of Conservation of Mass?

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An example is the reaction of hydrogen and oxygen to form water, where the mass of hydrogen and oxygen equals the mass of water produced.