Chapter 15, Problem 1CQ

To determine

The definition of rock.

Answer to Problem 1CQ

Rock is formed when one or more minerals aggregate together and many other substances also combine with it.

Explanation of Solution

Minerals are made up of many elements. Different minerals combine physically to form rocks. Rocks are the aggregation of many types of minerals and materials. Materials that make a rock can be a volcanic glass or a silicate, but these substances are not considered as minerals. The reason behind this is that these substances do not have a crystalline structure.

Rocks are classified into three types based on the process of their formation. The three types of rocks are igneous rocks, sedimentary rocks, and metamorphic rocks.

Conclusion:

Therefore, a rock is is formed when one or more minerals aggregate together and many other substances also combine with it.