Balancing Equations Practice

Front

What is the principle of conservation of mass?

Back

Matter is not created or destroyed in a chemical reaction.

Front

What is a balanced chemical equation?

Back

A chemical equation where the number of atoms for each element is the same on both sides of the equation.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does a coefficient in a chemical equation represent?

Back

The number of molecules or moles of a substance involved in the reaction.

Front

How do you identify an unbalanced equation?

Back

An equation where the number of atoms of at least one element is not the same on both sides.

Front

What is the formula for water?

Back

H₂O

Front

How many elements are in the compound C₂H₈O?

Back

3 (Carbon, Hydrogen, Oxygen)

Front

What is the balanced equation for the combustion of methane (CH₄)?

Back

CH₄ + 2O₂ → CO₂ + 2H₂O

Front

What is the difference between a subscript and a coefficient?

Back

A subscript indicates the number of atoms in a molecule, while a coefficient indicates the number of molecules.