Balancing Equations and Types of Reactions

Front

What is a single replacement reaction?

Back

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

Front

What is a synthesis reaction?

Back

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

Front

What is a decomposition reaction?

Back

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

Front

What is a double replacement reaction?

Back

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

Front

What is a combustion reaction?

Back

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

Front

What are reactants in a chemical equation?

Back

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

Front

What are products in a chemical equation?

Back

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

Front

What does it mean for a chemical equation to be balanced?

Back

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

Front

How do you identify a balanced equation?

Back

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

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.