Balancing Equations

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created nor destroyed.

Front

If I have 100 grams of reactants, how many grams of products should I have?

Back

100 grams.

Front

Balance the equation: C + S8 -> ?

Back

4C + S8 -> 4CS2.

Front

Balance the equation: Na + O2 -> ?

Back

2Na + O2 -> Na2O2.

Front

Balance the equation: H2 + O2 -> ?

Back

2H2 + O2 -> 2H2O.

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 does it mean to balance a chemical equation?

Back

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

Front

What is the significance of balancing equations?

Back

It reflects the Law of Conservation of Mass, ensuring mass is conserved in a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.