Radioactivity-NFE

The half-life of a radioactive element depends on

 
 
 
 

The half-life of a radioactive substance is the time required for

 
 
 
 

The phenomenon in which heavy nuclei split into smaller nuclei, releasing energy, is called

 
 
 
 

The process in which an unstable nucleus emits radiation to become more stable is called

 
 
 
 

The unit used to measure radioactive decay is

 
 
 
 

Which radiation can be stopped by a sheet of paper?

 
 
 
 

In a nuclear reaction, the total mass-energy of reactants and products

 
 
 
 

When a neutron collides with a uranium-235 nucleus, it causes

 
 
 
 

Which type of radiation has the highest ionization power?

 
 
 
 

What is the charge of a beta particle?

 
 
 
 

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