Changing State: Evaporation

Why do experiments require a control? Guide scholars through designing an experiment to see what they can do to evaporate water faster with a lesson plan that stresses the importance of controlling all variables. The second activity allows pupils to build molecular models of water from Styrofoam. 

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CCSS: Designed
NGSS: Designed
Additional Tags
Instructional Ideas
  • The day after the lesson, when the water molecule models are dry, spread them out on the floor and place a Caution Wet Floor sign over or near them
Classroom Considerations
  • Follow all safety precautions with hot water
  • Requires prior knowledge of the change in the movement of molecules as it relates to temperature
  • Second in a five-part series
  • Begins with an observation activity the entire class can view
  • Utilizes a 5E model
  • Provides guided discussion questions and possible answers
  • None