Balancing chemical equations

Intros

Lessons

What is a chemical equation?
What does the conservation of mass mean?
A good method to balance equations quickly.
A balancing mistake you need to avoid.

Examples

Lessons

Practice balancing equations.
Balance the equation:

H $_2$ SO $_4 +$ NaOH $\,$ → $\,$ Na $_2$ SO $_4 +$ H $_2$ O
Balance the equation:

HCl $+$ Mg(OH) $_2 \,$ → $\,$ MgCl $_2 +$ H $_2$ O
Balance the equation:

C $_3$ H $_8 +$ O $_2 \,$ → $\,$ CO $_2 +$ H $_2$ O
Balance the equation:

Na $_2$ CO $_3 +$ H $_3$ PO $_4 \,$ → $\,$ Na $_3$ PO $_4 +$ CO $_2 +$ H $_2$ O

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