Chemical Reaction Types

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What is a decomposition reaction?

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A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more simpler products. Example: 2HI → H2 + I2.

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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. Example: AB + CD → AD + CB.

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What does the law of conservation of mass state?

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The law of conservation of mass states that matter and mass cannot be created or destroyed in a chemical reaction.

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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. Example: Fe + H2SO4 → Fe2(SO4)3 + H2.

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What is the role of coefficients in balancing chemical equations?

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Coefficients are used to balance chemical equations by indicating the number of molecules or moles of each reactant and product. You can only add, change, or remove coefficients.

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What is a synthesis reaction?

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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 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. Example: CH4 + 2O2 → CO2 + 2H2O.

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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.

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What is the significance of subscripts in a chemical formula?

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Subscripts indicate the number of atoms of each element in a compound. For example, in H2O, the '2' indicates there are two hydrogen atoms.

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What is an example of a balanced chemical equation?

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An example of a balanced chemical equation is: 2H2 + O2 → 2H2O, which shows that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water.