What I learned in this unit is expansion and contraction. Expansion is to heat up to get larger. Contraction is to cool down to smaller. What I liked about this unit is  all the labs we did espically the popcorn lab. One thing I did'nt about this unit is learning about condution and convection. I did'nt like learing about those two things because they were confusing of what  the difference is between them. My question is is thier any more good condutors other than metals?