Reaction Types, Balancing, and Stoichiometry

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound. For example: A + BC → AC + B.

Front

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. For 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. For example: AB → A + B.

Front

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. For example: AB + CD → AD + CB.

Front

What is a combustion reaction?

Back

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: CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, ensure that the number of atoms of each element is the same on both sides of the equation by adjusting coefficients.

Front

What is the balanced equation for the combustion of methane (CH₄)?

Back

The balanced equation is: CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

What is stoichiometry?

Back

Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

How many moles of copper are needed to react with 5.8 moles of silver nitrate in the reaction Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag?

Back

2.9 moles of copper are needed.

Front

What is the mole ratio of Cu to AgNO₃ in the reaction Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag?

Back

The mole ratio is 1:2.