Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

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What does the coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What is the principle of conservation of mass?

Back

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

Front

How do you balance the equation: H2 + O2 -> H2O?

Back

The balanced equation is 2H2 + O2 -> 2H2O.

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the same number of atoms of each element is present on both sides of the equation.

Front

What is a subscript in a chemical formula?

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A subscript indicates the number of atoms of an element in a molecule.

Front

What is the difference between a reactant and a product?

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Reactants are the starting materials in a chemical reaction, while products are the substances formed as a result of the reaction.

Front

How do you identify a balanced equation?

Back

An equation is balanced when the number of atoms of each element is the same on both sides of the equation.