Concept Items
22.1 The Structure of the Atom
1.
A star emits light from its core. One observer views the emission unobstructed while a second observer views the emission while obstructed by a cloud of hydrogen gas. Describe the difference between their observations.
- Intensity of the light in the spectrum will increase.
- Intensity of the light in the spectrum will decrease.
- Frequencies will be absorbed from the spectrum.
- Frequencies will be added to the spectrum.
2.
How does the orbital energy of a hydrogen-like atom change as it increases in atomic number?
- The orbital energy will increase.
- The orbital energy will decrease.
- The orbital energy will remain constant.
- The orbital energy will be halved.
22.4 Nuclear Fission and Fusion
3.
Aside from energy yield, why are nuclear fusion reactors more desirable than nuclear fission reactors?
- Nuclear fusion reactors have a low installation cost.
- Radioactive waste is greater for a fusion reactor.
- Nuclear fusion reactors are easy to design and build.
- A fusion reactor produces less radioactive waste.