Types of Reactions and Balancing

Front

What is a chemical reaction?

Back

A process in which substances (reactants) undergo a transformation to form new substances (products).

Front

What are the main types of chemical reactions?

Back

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

Front

Define Synthesis Reaction.

Back

A reaction where two or more reactants combine to form a single product. Example: @@A + B ightarrow AB@@.

Front

Define Decomposition Reaction.

Back

A reaction where a single compound breaks down into two or more simpler products. Example: @@AB ightarrow A + B@@.

Front

Define Single Replacement Reaction.

Back

A reaction where one element replaces another in a compound. Example: @@A + BC ightarrow 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. Example: @@AB + CD ightarrow AD + CB@@.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

How do you balance the equation @@Mg + Cl_2 ightarrow MgCl_2@@?

Back

The equation is already balanced as there is 1 Mg and 2 Cl on both sides.

Front

What is a precipitate in a chemical reaction?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

Identify the precipitate in the reaction: @@Pb(NO_3)_2(aq) + 2KI(aq) ightarrow PbI_2(s) + 2KNO_3(aq)@@.

Back