Identifying types of reactions and Law of Conservation of Mass

Front

What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What is the Law of Conservation of Mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What are the four main types of chemical reactions?

Back

1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement.

Front

Define Synthesis Reaction.

Back

A type of reaction where two or more reactants combine to form a single product (e.g., A + B → AB).

Front

Define Decomposition Reaction.

Back

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

Front

Define Single Replacement Reaction.

Back

A reaction where one element replaces another in a compound (e.g., A + BC → AC + B).

Front

Define Double Replacement Reaction.

Back

A reaction where the anions and cations of two different compounds exchange places to form two new compounds (e.g., AB + CD → AD + CB).

Front

What is an example of a Synthesis Reaction?

Back

2H₂ + O₂ → 2H₂O (Hydrogen gas combines with oxygen gas to form water).

Front

What is an example of a Decomposition Reaction?

Back

2H₂O → 2H₂ + O₂ (Water decomposes into hydrogen and oxygen gases).

Front

What is an example of a Single Replacement Reaction?

Back

Zn + CuSO₄ → ZnSO₄ + Cu (Zinc replaces copper in copper sulfate).