Practice Balancing Equations in Chemistry
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
Adjusting the coefficients in a chemical equation so each type of atom is equal on both sides.
Atoms can't appear or disappear — every atom on the left must show up on the right.
Example 1
easyBalance the equation: \text{Fe} + \text{O}_2 \rightarrow \text{Fe}_2\text{O}_3.
Example 2
mediumBalance: \text{C}_3\text{H}_8 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O}.
Example 3
mediumBalance: \text{Al} + \text{HCl} \rightarrow \text{AlCl}_3 + \text{H}_2.
Example 4
mediumBalance the equation for the formation of ammonia: \text{N}_2 + \text{H}_2 \rightarrow \text{NH}_3.