Reaction Types and Balancing

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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 and heat. Example: C2H4 + 3 O2 → 2 CO2 + 2 H2O.

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What is a double displacement reaction?

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A double displacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: 2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH.

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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. Example: Na + Br2 → NaBr.

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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, following the law of conservation of mass. Example: CH4 + 2 O2 → CO2 + 2 H2O is balanced.

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How do you identify a combustion reaction?

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A combustion reaction can be identified by the presence of oxygen as a reactant and the production of carbon dioxide and water as products.

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What is the general form of a double displacement reaction?

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The general form of a double displacement reaction is AB + CD → AD + CB, where A and C are cations and B and D are anions.

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What is the significance of balancing chemical equations?

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Balancing chemical equations is important because it ensures that the law of conservation of mass is obeyed, meaning that matter is neither created nor destroyed in a chemical reaction.

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What is an example of a synthesis reaction?

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An example of a synthesis reaction is: 2 H2 + O2 → 2 H2O.

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What are the products of a combustion reaction involving hydrocarbons?

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The products of a combustion reaction involving hydrocarbons are typically carbon dioxide (CO2) and water (H2O).

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What is the difference between single displacement and double displacement reactions?

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