Radiation
The half-life of a radioisotope is the amount of time it takes for
half of the sample to decay
It takes one _____________ for a radioactive substance to decay in half.
half life
What state of matter does fusion take place in?
plasma
Alpha particles are __________________charged.
positively
Which device measures radiation exposure at work?
film badge
How do nuclear decay rates behave?
constant
When neutrons released during a fission reaction cause a series of other fission reactions, it is called
Beta particles are __________________charged.
negatively
What is not true about radiation?
it is always safe
A sample of a radioisotope had a mass of 100.0 g. After exactly 24 days, 6.25 g of the sample remained. How long is the half life of the sample?
6 days
During nuclear fission and fusion, what is produced?
nuclear energy
Gamma rays do not have a __________, they are energy waves.
charge
What is the process in which an unstable atomic nucleus emits charged particles or energy or both?
Radioactivity
What type of radiation is emitted when polonium-212 forms lead-208?
Alpha Particle
Nuclear power plants' primary environmental advantage?
no air pollution
What type of nuclear decay produces energy instead of a particle?
Gamma Decay
Substances are radioactive if their nucleus is _____________.
unstable
What type of radiation is emitted when Carbon-14 forms Nitrogen-14?
beta particle
During nuclear fission and fusion , great amounts of energy are produced from
small mass
An alpha particle is the same as a(an)
helium nucleus