Types of Chemical Reactions and Balancing Equations

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What is a synthesis reaction?

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A synthesis reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. For example, A + B → AB.

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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. For example, AB → A + B.

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What is a combustion reaction?

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A combustion reaction is a type of chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat. For example, CxHy + O2 → CO2 + H2O.

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What are coefficients in a chemical equation?

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

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How do you balance a chemical equation?

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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 the reactants equals the total mass of the products.

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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 when zinc reacts with hydrochloric acid: Zn + 2HCl → ZnCl2 + H2.

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What is an example of a double replacement reaction?

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An example of a double replacement reaction is when silver nitrate reacts with sodium chloride: AgNO3 + NaCl → AgCl + NaNO3.

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What is the difference between an endothermic and exothermic reaction?

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An endothermic reaction absorbs energy from its surroundings, while an exothermic reaction releases energy to its surroundings.

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What is the role of a catalyst in a chemical reaction?

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A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.