Balancing Chemical Equations

Front

What are the new substances created after a chemical reaction called?

Back

Products

Front

What are the elements or compounds present before a chemical reaction called?

Back

Reactants

Front

Is the following equation balanced or unbalanced? 4 Fe + 3 O2 --> 2 Fe2O3

Back

Balanced

Front

What is the large number before a molecule called?

Back

Coefficient

Front

Is the following equation balanced or unbalanced? SnO2 + 2 H2 --> Sn + 2 H2O

Back

Balanced

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of an element in a molecule.

Front

What is the difference between reactants and products?

Back

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

Front

What does it mean for a chemical equation to be unbalanced?

Back

It means that the number of atoms of each element is not the same on both sides of the equation.

Front

What is the role of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.