Physical Science

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These books contain three developmentally appropriate reading levels for each grade span.

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Home > Physical Science > Grades 3-4 > Solids, Liquids, and Gases
Solids, Liquids, and Gases
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Solids, Liquids, and Gases

All things on Earth consist of matter, and matter exists in many forms. The most common states of matter are solids, liquids, and gases. This unit addresses how matter can change from one state to another. Matter in each state has identifiable properties. The unit also explains that when matter combines, a mixture may form. The components of that mixture may retain their individual properties when combined, or the mixture may have new properties. What allows us to have so many different things all around us is that matter can be found in various states, and it combines with other matter in many ways.

Unit Nonfiction Books

Book cover shows an ice cube sitting in a puddle of water with steam rising above it.

Solids, Liquids, and Gases

low mid high

Lesson Resources

Interactive Science Lessons

Changing States of Matter

Process Activities

FOCUS Books

Supporting Materials

Reading A-Z Books

Book Assembly

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