Dispel the misconception that atoms are always little round balls! Illustrate changes in the electron cloud with an entertaining interactive. Pupils push and pull on the cloud by altering the charge on plates located on either side of the model atom.

Concepts

electrons, atoms, positive charges, negative charges, atomic models, making observations

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Additional Tags

science

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Instructional Ideas

• Create and distribute a graphic organizer that allows learners to sketch the atom under all of the possible conditions
• Use the interactive as part of an inquiry lesson and ask the class to draw their own conclusions about the factors that affect the electron cloud
  

Classroom Considerations

• Requires minimal prior knowledge of atomic models 
  

Pros

• The simulation responds smoothly to changes in conditions
• Shading helps users identify areas of charge concentration
  

Cons

• None