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, indicating that mass is conserved during the reaction.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

How do you determine the total number of atoms in a compound?

Back

To find the total number of atoms in a compound, add the subscripts of each element in the chemical formula.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the same number of each type of atom is present on both sides of the equation, reflecting the conservation of mass.

Front

What does a coefficient in a chemical equation represent?

Back

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

Front

How do you balance the equation Al₂O₃ → Al + O₂?

Back

The balanced equation is 2Al₂O₃ → 4Al + 3O₂.

Front

What is a skeleton equation?

Back

A skeleton equation is a chemical equation that shows the reactants and products but not their coefficients.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.