1. The problem statement, all variables and given/known data Using a microscope, smoke particles can be seen moving inside a glass tube. They appear as tiny spots of light that move in various directions. The air molecules inside the glass tube cannot be seen with the aid of the microscope. a) State why a microscope is needed to see the smoke particles. b) Explain why the smoke particles appear as spots of light. c) State what makes the smoke particle moves in this way. 2. Relevant equations No need for equations 3. The attempt at a solution I do not know how to explain.