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How to Balance:

Word equation: Calcium + Sulfuric acid → Calcium sulfate + Hydrogen gas

Type of Chemical Reaction: For this reaction we have a single displacement reaction.

Balancing Strategies: In this reaction the Ca is displacing the H in the H2SO4 molecule.

To balance the equation be sure to carefully count up all the atoms on each side.

For a complete explanation, watch:

When balancing chemical equations our goal is to have the same number of each type of atom on both sides of the equation.

Only change the coefficients (these are the numbers in front substances).
Never change the subscripts (the small numbers after elements).