Balancing Equations and Types of Reactions

A type of chemical reaction where one element replaces another in a compound. Example: Zn + CuSO4 → ZnSO4 + Cu.

A chemical reaction where two or more simple substances combine to form a more complex product. Example: 2H2 + O2 → 2H2O.

A reaction where a compound breaks down into simpler substances. Example: 2H2O → 2H2 + O2.

A reaction where two compounds exchange ions to form two new compounds. Example: AgNO3 + NaCl → AgCl + NaNO3.

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light. Example: CH4 + 2O2 → CO2 + 2H2O.

The starting substances in a chemical reaction, found on the left side of the equation.

The substances formed as a result of a chemical reaction, found on the right side of the equation.

A balanced equation has the same number of each type of atom on both sides, following the law of conservation of mass.

Count the number of atoms of each element on both sides of the equation; they must be equal.

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