What i learned in the chapter Heat and Matter was,air is a good insulator for bears and other animals. Also I learned that if you take out air if you are on a long drive there would be less chance of blowing out a tire because there is less particles.  Another thing I learned is there is gaps in between railroads to help with expansion and contraction. What I liked best is when we did the experiment with the food coloring because it was fun to see what the food coloring would do that is my favorite thing we did. What i disliked about this unit is i really didn't find it interesting about the unit. My question is can you tell me an example of conduction?