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What is a balanced chemical equation?

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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 during the reaction.

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

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To find the total number of atoms in a compound, add the subscripts of each element in the chemical formula.

Front

What is the law of conservation of mass?

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The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

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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 in the reaction.

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What type of reaction is represented by the equation: 2 H₂ + O₂ → 2 H₂O?

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This is a combination reaction, where two or more reactants combine to form a single product.

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What is a combustion reaction?

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A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat.

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What is a decomposition reaction?

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A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products.

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What is a single replacement reaction?

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A single replacement reaction is a chemical reaction where one element replaces another element in a compound.

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What is a double replacement reaction?

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A double replacement reaction is a chemical reaction where the anions and cations of two different compounds switch places, forming two new compounds.

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How do you identify the number of a specific atom in a compound?

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To identify the number of a specific atom in a compound, look at the subscript next to the element's symbol in the chemical formula.