Complete the sentence.
In this chemical reaction, gasoline is a ().

 - reactant
 - product
Read the underlined text carefully. Look for information about what happens to gasoline in this chemical reaction.
Gasoline provides the energy that powers many car engines. In an engine, gasoline and oxygen are mixed together and burned, creating carbon dioxide gas and water vapor. This process releases energy that the engine uses to turn the wheels, making the car move.
The underlined text tells you that when gasoline and oxygen combine, carbon dioxide and water are formed. When gasoline and oxygen react, or go through a chemical change, their atoms are rearranged to form carbon dioxide and water. Because gasoline reacts in this chemical reaction, gasoline is a reactant.