This piece of complex text (760L) supports the science concept of atomic theory. A great addition to the reading block to make a science/ELA integration possible. Included are Common Core-style questions.
SC.5.P.8.1 Compare and contrast the basic properties of solids, liquids, and gases, such as mass, volume, color, texture, and temperature.
SC.5.P.8.4 Explore the scientific theory of atoms (also called atomic theory) by recognizing that all matter is composed of parts that are too small to be seen without magnification.