Balancing Chemical Equations

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

What coefficient should be used to balance the equation N₂ + O₂ → __NO?

Back

2

Front

How many HCl molecules do you need to balance the equation Mg + __HCl → MgCl₂ + H₂?

Back

2

Front

How many elements are in C₆H₁₂O₆?

Back

3

Front

Is the equation Al + O₂ → 2Al₂O₃ balanced?

Back

No

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

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.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the same number of each type of atom appears on both sides of the equation.

Front

What does it mean for a chemical equation to be balanced?

Back

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

Front

What is the first step in balancing a chemical equation?

Back

Count the number of atoms of each element on both sides.