Balance Chemical Equations

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

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, represented as AB -> A + B.

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What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product, represented as A + B -> AB.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound, represented as A + BC -> AC + B.

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What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where the anions and cations of two different compounds exchange places, represented as AB + CD -> AD + CB.

Front

How do you balance the equation Al + HCl -> H2 + AlCl3?

Back

To balance the equation, use coefficients: 2Al + 6HCl -> 3H2 + 2AlCl3.

Front

What is the general formula for a combustion reaction?

Back

The general formula for a combustion reaction is a hydrocarbon reacting with oxygen to produce carbon dioxide and water, represented as CxHy + O2 -> CO2 + H2O.

Front

What is the purpose of balancing chemical equations?

Back

The purpose of balancing chemical equations is to ensure that the same number of atoms of each element are present on both sides of the equation, reflecting the conservation of mass.

Front

What does the coefficient in a chemical equation represent?

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The coefficient in a chemical equation represents the number of moles of a substance involved in the reaction.