The changes in matter chapter was cool. What I like about this chapter is that we did a tone of experiments like the one in the picture. The experiments were real fun. What I didn't like about this chapter is that we had to do many study guides and homework. Home work stinks. I also liked how we got to use the computers for the science test. My favorite experiment was the chemistry in a bag project. We watched the bags blow up and heat up. A few of them popped. The stuff turned purple. I learned that a  solution is two or more things mixted together until you can't see it. Another thing that I learned is about physical changes in matter and chemical changes too. What I want to know is that how did the chemistry in a bag heat up?

The three things that I did learn in this unit are how radiation heats things up without the use of matter, How convection is not created by direct contact but how Pericles pass each other and making convection,and that heat will go up and cold will go down. What I did like best about this unit is that we did many experiments. My favorite was the food coloring experiment. What I did like least about this unit is how we had to do the home work. Even though they are needed. 

There are other things I did like about this unit like how we got to watch videos on it and many others. One question I do have is how does radiation not use matter?