Types of Chemical Reactions and Balancing

Front

What are the main types of chemical reactions?

Back

1. Synthesis (Combination) Reaction 2. Decomposition Reaction 3. Single Replacement Reaction 4. Double Replacement Reaction 5. Combustion Reaction

Front

Define 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 Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

1. Write the unbalanced equation. 2. Count the number of atoms of each element on both sides. 3. Use coefficients to balance the atoms, starting with the most complex molecule. 4. Check your work to ensure all elements are balanced.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product (e.g., A + B → AB).

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products (e.g., AB → A + B).

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound (e.g., A + BC → AC + B).

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where the anions and cations of two different compounds exchange places, forming two new compounds (e.g., AB + CD → AD + CB).

Front

What is a combustion reaction?

Back

A combustion reaction is a type of chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat (e.g., Hydrocarbon + O₂ → CO₂ + H₂O).

Front

How many atoms of Hydrogen are in NH₃O₅?

Back

There are 3 Hydrogen atoms in NH₃O₅.