Particulate Popcorn Lab Assessment Sheet

1. What was added to the solid to cause it to melt? What would you take away from the system to make it re-solidify?
   
   
   
   
   
   
   
2. How is a liquid transformed into a gas?
   
   
   
   
   
   
   
3. How is a gas transformed into a liquid?
   
   
   
   
   
   
   
4. In the popcorn and margarine model, what does the margarine represent? What do the popcorn kernels represent?
   
   
   
   
   
   
   
5. What do you consider to be the strengths of this popcorn and margarine model? The weaknesses?