Balancing Chemical Equations

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What is a chemical equation?

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A representation of a chemical reaction using symbols and formulas to show the reactants and products.

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What are reactants in a chemical equation?

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The starting materials that undergo a chemical change in a reaction.

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What are products in a chemical equation?

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The new substances formed as a result of a chemical reaction.

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What does the arrow (→) in a chemical equation signify?

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It indicates the direction of the reaction, showing that reactants are transformed into products.

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What is the Law of Conservation of Matter?

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A principle stating that matter cannot be created or destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

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How do you determine the number of atoms in a compound?

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By using the subscripts in the chemical formula; for example, in Al(OH)3, there are 1 Al, 3 O, and 3 H atoms.

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What is a balanced chemical equation?

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An equation where the number of atoms for each element is the same on both sides, adhering to the Law of Conservation of Matter.

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How do you balance a chemical equation?

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By adjusting the coefficients in front of the compounds to ensure the same number of each type of atom on both sides.

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What is a coefficient in a chemical equation?

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A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved.

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What is the significance of subscripts in a chemical formula?

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They indicate the number of atoms of each element in a molecule; for example, in H2O, the subscript 2 means there are 2 hydrogen atoms.