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 happens to the mass of reactants during a chemical reaction?

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The mass of reactants remains the same and is equal to the mass of the products.

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What is a reactant in a chemical equation?

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A reactant is a substance that undergoes a chemical change in a reaction.

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What is a product in a chemical equation?

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A product is a substance that is formed as a result of a chemical reaction.

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What is a subscript in a chemical formula?

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A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

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What is a coefficient in a chemical equation?

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A coefficient is a number placed in front of a chemical formula that indicates how many molecules or moles of that substance are involved in the reaction.

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How do you determine if a chemical equation follows the Law of Conservation of Mass?

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You check if the number of atoms of each element is the same on both sides of the equation.

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What does it mean if a chemical equation is balanced?

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A balanced chemical equation has the same number of each type of atom on both sides, indicating that mass is conserved.

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What is the significance of balancing chemical equations?

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Balancing chemical equations is important because it reflects the Law of Conservation of Mass and ensures that the reaction is accurately represented.

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What is the difference between a chemical change and a physical change?

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A chemical change results in the formation of new substances, while a physical change does not alter the chemical composition of a substance.