Unstable nuclei can fall apart, but will regain stability by emitting alpha or beta particles and by also emitting gamma radiation. Radioactive sources can be useful, but need to be handled safely.
What form of radiation is emitted by nuclei with too many neutrons?
Gamma radiation can be significantly reduced by which material?
Which form of radiation has the highest ionising power?
What fraction of a radioisotope has decayed after two half-lives? - Higher
All of it
What happens to an object exposed to irradiation?
It becomes radioactive
It does not become radioactive
It remains unchanged
Which nucleus does uranium-238 become when it emits an alpha particle?
Which word describes the process when a radioactive powder is spilled onto clothing?
What properties are most desired in an isotope used to investigate the kidneys which normally take 12 hours to process a contaminant?
Alpha emitter, half-life of ten days
Gamma emitter, half-life of six hours
Gamma emitter, half-life of ten days
A carbon-14 nucleus decays to a nitrogen-14 nucleus. Which radioactive particle must have been emitted?
What can irradiation be used for?
Killing bacteria on fruit
Warming up food
Getting a sun tan