Balancing Equations Checkpoint

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in a chemical reaction.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

Balance the equation: ___Na + ___F₂→ ___NaF

Back

2 1 2

Front

Balance the equation: ___Fe + ___O₂→ ___Fe₂O₃

Back

4 3 2

Front

Balance the equation: ___H₂O + ___O₂→ ___MgO + ___Fe

Back

2 1 4 3

Front

Balance the equation: __Ca + __H₂O→ __Ca(OH)₂ + __H₂

Back

1 2 1 1

Front

Balance the equation: ___Fe₂O₃→ ___Fe + ___O₂

Back

2 4 3

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.