Through evaporation and condensation experiments, students learn that water can change from one state to another when heat is absorbed or released. They also learn how to change the freezing point of water by adding salt.

Student Resources

• 2.1 Vocabulary
• 2.2 Evaporation
• 2.3 Condensation
• 2.4 Freezing Point
• 2.5 Section 2 Assessment

Learn by Reading

For additional content-area reading, check out the Houghton Mifflin Science eBook: Grade 3, Unit E, pages 6–7.