Conservation of Matter - Key Concepts

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What is the Law of Conservation of Matter?

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The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

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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 matter is conserved.

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How can you tell 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 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 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, found on the right side of the equation.

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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 the reaction, helping to balance the equation.

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What does the symbol '→' represent in a chemical equation?

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The symbol '→' indicates the direction of the reaction, showing that reactants are transformed into products.

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What is the difference between a balanced and unbalanced equation?

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A balanced equation has equal numbers of each type of atom on both sides, while an unbalanced equation does not.

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What is the formula for calculating the number of atoms in a compound?

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To calculate the number of atoms in a compound, multiply the subscript of each element by the coefficient in front of the compound.

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What is the role 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.