Balancing Equations

Front

What does the principle of conservation of mass mean in chemical reactions?

Back

Matter is not created or destroyed.

Front

Is the equation N2 + 3 H2 → 2NH3 balanced or unbalanced?

Back

Balanced

Front

Is the equation Al + O2 → 2Al2O3 balanced?

Back

No

Front

What is the term for the small number written below an element in a chemical formula?

Back

Subscript

Front

What are the substances called that are listed on the left side of a chemical equation?

Back

Reactants

Front

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

Back

Products

Front

In the equation 2H2 + O2 → 2H2O, what does the '2' in front of H2 represent?

Back

Coefficient

Front

What is the purpose of balancing a chemical equation?

Back

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

Front

What does an unbalanced equation indicate about a chemical reaction?

Back

It indicates that the law of conservation of mass is not being followed.

Front

What is the yield in a chemical reaction?

Back

The amount of product formed in a reaction.