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

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How many atoms of an element are in a chemical formula?

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To find the number of atoms of an element in a chemical formula, look for the subscript next to the element's symbol. If there is no subscript, it means there is one atom.

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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 chemical equation?

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A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

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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, found on the left side of a chemical 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, found on the right side of a chemical equation.

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How do you determine if a chemical equation is balanced?

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Count the number of atoms of each element on both sides of the equation. If they are equal, the equation is balanced.

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What happens to atoms during a chemical reaction?

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Atoms are rearranged during a chemical reaction; they are not created or destroyed, but transformed into new substances.

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What is the significance of subscripts in a chemical formula?

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Subscripts indicate the number of atoms of each element in a molecule. For example, in H₂O, the '2' indicates there are two hydrogen atoms.

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What is the role of coefficients in a chemical equation?

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Coefficients are numbers placed before compounds in a chemical equation to indicate how many molecules or moles of that substance are involved in the reaction.