Balancing and Types of Chemical Equations

Front

What is the law of conservation of mass?

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The law of conservation of mass states that in a chemical reaction, the total mass of the reactants must equal the total mass of the products. This means that atoms are neither created nor destroyed during a chemical reaction.

Front

What role do coefficients play in a balanced chemical equation?

Back

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

Front

What type of reaction is represented by the equation CoCO₃ → CoO + CO₂?

Back

This is a decomposition reaction, where a single compound breaks down into two or more simpler products.

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers that appear before the formulas in a chemical equation, indicating the number of units of each substance involved in the reaction.

Front

How do you balance the equation P₄ + O₂ → P₂O₃?

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The balanced equation is 1P₄ + 3O₂ → 2P₂O₃, meaning one molecule of tetraphosphorus reacts with three molecules of oxygen to produce two molecules of diphosphorus trioxide.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product.

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What is a decomposition reaction?

Back

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

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What is a single replacement reaction?

Back

A single replacement reaction is a type of 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 type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

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What is the difference between a reactant and a product?

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Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.