1) oxygen -16, oxygen -17, and oxygen -18 are: A. Different elements B. Differen

Question

1) oxygen -16, oxygen -17, and oxygen -18 are: A. Different elements B. Different ions C. Different isotopes D. Different materials 2)Which Process supplies the energy converted to electrical energy in a nuclear power plant? A. the release of steam from underground hot springs B. fusion of small nuclei C. fission of large nuclei D. the combustion of natural gas E. the burning of coal 3. When two light nuclei fuse together, mass A. is conserved B. is converted to energy C. is created from energy D. is increased

Explanation / Answer

1)

C. Different isotopes

O16 O17 O18, are the same element O but with different number of Neutrons, thus are different isotopes, Nuclear power plant use fission of U235 (U convert into multiple lighter nucleus )

2)

C. fission of large nuclei

fusion is a process of smaller nucleus combine to form larger more stable nucleus( such as He4) and release energy in the process,

3)

B. is converted to energy

When two light atoms fuse together, usually the sum of the masses of the reactants is greater than the sum of the masses of the products, and the discrepancy appears as kinetic energy.

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