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 mass is neither created nor destroyed in a chemical reaction; it is conserved.

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What does it mean for a chemical equation to be balanced?

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

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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, found on the left side of a chemical equation.

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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, found on the right side of a chemical equation.

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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 in an equation to indicate how many molecules or moles of that substance are involved.

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What is a subscript in a chemical formula?

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

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Can you change subscripts to balance a chemical equation?

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No, you cannot change subscripts to balance a chemical equation, as it alters the identity of the substance.

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What is the purpose of balancing a chemical equation?

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The purpose of balancing a chemical equation is to ensure that the same number of each type of atom is present on both sides, reflecting the conservation of mass.

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What does the number 4 represent in 4NH3?

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The number 4 is a coefficient indicating that there are four molecules of ammonia (NH3).

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In the reaction N2 + 3H2 → 2NH3, what are the reactants?

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The reactants are N2 and H2.