Chemical Reaction Types Mastery

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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, the reaction of magnesium and oxygen to form magnesium oxide: 2Mg + O2 → 2MgO.

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What characterizes a combustion reaction?

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A combustion reaction is a type of chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of light or heat. An example is the reaction of ethane with oxygen: C2H6 + 2O2 → 2CO2 + 3H2O.

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What is a single replacement reaction?

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A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound. For example, in the reaction 2Na + 2H2O → 2NaOH + H2, sodium replaces hydrogen in water.

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Define a decomposition reaction.

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A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more simpler products. An example is the reaction 2H2O → 2H2 + O2, where water decomposes into hydrogen and oxygen.

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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. An example is BaCl2 + Na2SO4 → BaSO4 + 2NaCl, where barium chloride and sodium sulfate react to form barium sulfate and sodium chloride.

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What are the five main types of chemical reactions?

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The five main types of chemical reactions are: 1) Synthesis, 2) Decomposition, 3) Single Replacement, 4) Double Replacement, and 5) Combustion.

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How can you identify a synthesis reaction from a chemical equation?

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A synthesis reaction can be identified by the presence of two or more reactants combining to form a single product. The general form is A + B → AB.

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What is the general form of a combustion reaction?

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The general form of a combustion reaction is a hydrocarbon reacting with oxygen to produce carbon dioxide and water: CxHy + O2 → CO2 + H2O.

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What is the difference between a single replacement and a double replacement reaction?

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In a single replacement reaction, one element replaces another in a compound (A + BC → AC + B), while in a double replacement reaction, two compounds exchange partners (AB + CD → AD + CB).

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What is the role of energy in combustion reactions?

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In combustion reactions, energy is released in the form of heat and light as the reactants (usually hydrocarbons) react with oxygen, resulting in the formation of products like carbon dioxide and water.