Flashcardizz Practice: Types of Reactions and Balancing Equations

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What are subscripts in a chemical formula?

Back

Subscripts are the small numbers written to the lower right of an element's symbol in a chemical formula, indicating the number of atoms of that element in a molecule.

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What are coefficients in a chemical equation?

Back

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

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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. Example: A + B → AB.

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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 products. Example: AB → A + B.

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What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

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How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides of the equation.

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What is the law of conservation of mass?

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The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

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What is an example of a combustion reaction?

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An example of a combustion reaction is the burning of methane: CH₄ + 2O₂ → CO₂ + 2H₂O.

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What is an example of a single replacement reaction?

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An example of a single replacement reaction is: Zn + CuSO₄ → ZnSO₄ + Cu.

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What is the difference between an endothermic and exothermic reaction?

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An endothermic reaction absorbs heat from the surroundings, while an exothermic reaction releases heat.