CHEM 1001/CHM1020/CHM1025C/CHM1032C  Name:__Answer_


Module One: Sample Pretest

Part D: Chemical/Physical Change   5 points

State whether each of the following is a physical or a chemical change:


___chemical________1. Electricity decomposes water.



___physical________ 2. Methanol dissolves in gasoline



___physical________ 3. Dry ice pellets disappear



___chemical________ 4. Iron oxidizes to rust



___physical_________ 5. Bromine is a reddish-brown liquid at room temperature



Part E: Forms of Energy          5 points


List the six different forms of energy as an energy wheel:




                            Heat                         Light



                            Nuclear                   Electrical




Identify two forms of energy that are involved in each of the following energy conversions relating to a fossil fuel plant:


a. Burning coal converts water to steam:


                    chemical  to heat



b. A generator spins to make electricity:


                   mechanical to electrical