Balancing Chemical Equations and Types of Reactions Review

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 is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element in the reactants and products.

Front

What does the coefficient in a chemical equation represent?

Back

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

Front

What type of reaction is represented by the equation: 2 H₂ + O₂ → 2 H₂O?

Back

Synthesis (Combination) reaction.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where one reactant breaks down into two or more products.

Front

What is a single replacement reaction?

Back

A single replacement reaction occurs when one element replaces another element in a compound.

Front

What is a double replacement reaction?

Back

A double replacement reaction involves the exchange of ions between two compounds to form two new compounds.

Front

How do you identify a combustion reaction?

Back

A combustion reaction typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water.

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 the balanced equation for the reaction of iron and chlorine gas?

Back

2 Fe + 3 Cl₂ → 2 FeCl₃.