In Chemistry we learned about all the different types of variables. There are the independent which means the things that were different between the two things you are testing. The dependent variable is what you are testing. And the controlled variables which is what you kept the same. I enjoyed learning about this because we got to do different expiriment's like making film canisters fly. I could improve by maybe paying attention a tiny bit more because when we watched a go animate video
 
The video posted above is showing how gas, liquids and solids are used or made.