Exam 16: The Atomic Nucleus and Radioactivity

Which body is heated in its interior by nuclear processes?

Most of the radioactivity we personally encounter comes from

If all the uranium in the world were exhausted, breeder reactors would be

Pure elements can be transformed into entirely different elements. This statement at the present time is

Uranium-235, uranium-238 and uranium-239 are different

Present-day research in nuclear fusion uses

In both fission and fusion, mass

Between nuclear fission and nuclear fusion, radioactive by-products are more characteristic of nuclear

The helium in a child's balloon is composed of

Compared to the sum of the masses of all the individual nucleons in their separate states that make up a nucleus, the mass of the composite nucleus is

Fissioning an iron nucleus yields a net

When a gamma ray is emitted by a nucleus, the nucleus then has less

In nuclear fission and nuclear fusion reactions, the amount of mass converted to energy of other forms is

When the hydrogen isotope tritium-3 emits a beta particle, it becomes an isotope of

Artificially induced radioactive elements generally have

The half life of carbon 14 is 5730 years. If a 1-gram sample of old carbon is 1/8 as radioactive as 1-gram of a current sample, then the age of the old sample is about

Compared to the energy produced by fissioning a single uranium atom, the energy produced by fusing two deuterium atoms is

A certain radioactive isotope placed near a Geiger counter registers 120 counts per minute. If the half life of the isotope is one day, what will the count rate be at the end of four days?

A nuclear process that has relatively few radioactive by-products is

Fissioning a lead nucleus yields a net