Balancing Equations Practice

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 the reaction.

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change during a reaction, found on the left side of the equation.

Front

What is a product in a chemical equation?

Back

A product is a substance that is formed as a result of a chemical reaction, found on the right side of the equation.

Front

How do you determine the number of atoms of an element in a compound?

Back

The number of atoms of an element in a compound is indicated by the subscript next to the element's symbol.

Front

What is the significance of the law of conservation of mass in balancing equations?

Back

The law of conservation of mass states that matter cannot be created or destroyed, so the mass of reactants must equal the mass of products.

Front

Balance the equation: _ H₂ + O₂ -> H₂O

Back

2 H₂ + O₂ -> 2 H₂O

Front

What is the role of subscripts in chemical formulas?

Back

Subscripts indicate the number of atoms of each element in a molecule.

Front

How do you balance the equation: 2Li + Cl₂ -> ?

Back

2Li + Cl₂ -> 2LiCl

Front

What is the difference between a coefficient and a subscript?

Back

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