PHY 102PHY 102 Exam 2 Grand Canyon University- Answered

Which process supplies the energy converted to electrical energy in a nuclear power
plant?

 The release of steam from underground hot springs.
 The fusion of small nuclei.
 The fission of large nuclei.
 The combustion of natural gas.
 The burning of coal.



2

An explosion occurs 3400m away. Given that sound travels at 340 m/s, how long will it
take for the sound of the explosion to reach you?

 less than a second
 3 seconds
 10 seconds
 100 seconds



3

When ethanol (empirical formula C2H6O) burns, it combines with oxygen and forms
carbon dioxide and water. Which of the following is the balanced chemical reaction for
the burning of ethanol?




 C2H6O + O2 → CO2 + H2O



 C2H6O + 2 O2 → 2 CO2 + 3 H2O



 2 C2H6O + 3 O2 → 4 CO2 + 6 H2O

,  C2H6O + 3 O2 → 2 CO2 + 3 H2O



 C2H6O + 2 O2 → 2 CO2 + 2 H2O


4. When two light nuclei fuse together, mass




 Is conserved.
 Is converted to energy.
 Is created from energy.
 Is increased.
5

Which of the following is an example of a chemical change?

 An ice cube melting.
 A sheet of metal being formed into a jewelry box.
 A candle burning.
 A window breaking.
6

Sulfur dichloride is a cherry-red liquid. Which of the following is true about sulfur
dichloride?




 It is a covalent molecule with one sulfur atom for each two chlorine
atoms.
 It is an ionic compound with one sulfur atom for each two chlorine
atoms.
 It is a covalent molecule with two sulfur atoms for each one chlorine
atom.