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:
Chemical
Heat Light
Nuclear Electrical
Mechanical
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