Balancing Chemical Equations

Front

What is the Law of Conservation of Mass?

Back

It states that no matter can be created or destroyed.

Front

What is a coefficient in a chemical equation?

Back

The large number in front of a chemical formula.

Front

What coefficient should be used to balance the equation N2 + O2 --> _ NO?

Back

2

Front

Is the equation 2C2H2 + 5O2 --> 4CO2 + 2H2O balanced?

Back

Yes.

Front

What are the smaller numbers that you CANNOT change in a chemical equation?

Back

Subscript.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

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

Front

What is the purpose of using coefficients in a chemical equation?

Back

To indicate the number of molecules or moles of a substance.