Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.Common refrigerants are frequently referred to as Freon (a registered trademark of DuPont).hemical refrigerants are assigned an R number which is determined systematically according to molecular structure.
Some Rube Goldberg machines. use a complicated series of actions to simply move an object from. one place to another. Any object that is moving, has what is called kinetic energy; giving. an object more speed means giving it more kinetic energy.
Note that these are suggested materials--the great thing about making a Rube Goldberg Machine is that you can utilize scrap materials to make it. Tell your students about the project a few days in advance and encourage students to bring old toys from home for their group to use in their project.