Molecular Model
 

Molecular Model problem 23


Smoke particles, illuminated by a bright lamp, are seen through a microscope. They move about randomly. What causes this motion?


  • attraction between the smoke particles and the molecules of the air


  • collisions between the smoke particles and the molecules of the air


  • evaporation of the faster-moving smoke particles


  • warming of the smoke particles by the lamp


 

main author and content editor: Daniel Owoyomi