Balancing Chemical Equations

Front

The arrow in a chemical equation represents the ________________ ________________.

Back

Chemical Reaction

Front

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

Back

Balanced

Front

Balance the following equation: CH4 + 4 Cl2 → CCl4 + _____ HCl. What coefficient would need to be put in front of HCl?

Back

4

Front

The large number before a molecule is called a _______________.

Back

Coefficient

Front

The _________________ are either elements or compounds which are present prior to or before a chemical reaction.

Back

Reactants

Front

What do we call the substances formed as a result of a chemical reaction?

Back

Products

Front

In a balanced chemical equation, the number of atoms of each element must be ________________ on both sides.

Back

Equal

Front

What is the purpose of balancing a chemical equation?

Back

To obey the Law of Conservation of Mass.

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element in a molecule.

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms in a molecule.