Complete the sentence.
In this chemical reaction, copper is a ().
reactant product
This passage describes a chemical reaction. Read the passage. Then, follow the instructions below.
When the Statue of Liberty in New York City was built in the late 1800s, it was reddish-brown. Today, a green layer, called a patina, covers the statue's surface. This layer formed over time as copper in the statue combined with oxygen and other gases in the air to form the patina.
A chemical change occurs when new substances are formed from existing substances. This process is called a chemical reaction.
In a chemical reaction, one or more substances change into one or more different substances. During the reaction, the atoms of the original substances are rearranged to form other substances.
The original substances in a chemical reaction are called reactants. These substances react, or go through a chemical change.
The substances that are formed in a chemical reaction are called products. These substances are produced by the chemical reaction.
So, in a chemical reaction, reactants go through a chemical change to form products.
Read the underlined text carefully. Look for information about what happens to copper in this chemical reaction.
When the Statue of Liberty in New York City was built in the late 1800 s, it was reddish-brown. Today, a green layer, called a patina, covers the statue's surface. This layer formed over time as copper in the statue combined with oxygen and other gases in the air to form the patina.
The underlined text tells you that when copper in the statue and oxygen combine, a patina is formed. When copper and oxygen react, or go through a chemical change, their atoms are rearranged to form the patina. Because copper reacts in this chemical reaction, copper is a reactant.