Explain radioactivity by completing the paragraph below. In chemical reactions, atoms may rearrange but...

Explain radioactivity by completing the paragraph below.
In chemical reactions, atoms may rearrange but their ________ do not change. The rearrangement involves only the ________ of the atoms, not the ________ of the atoms. In nuclear reactions, ________ are different. In nuclear reactions, ________ gain stability by emitting ________ in the nucleus, the amount of ________ will continue until atoms in a process called ________ emit small stable nuclei are formed.
Sequence the steps of a nuclear reaction.
A stable, nonradioactive atom is formed.
________
________
The process of radioactive decay continues until the nucleus is stable.
An atom has an unstable nucleus.
Distinguish between alpha, beta, and gamma radiation by completing the table below.
Radiation Type
Alpha
Beta
Gamma
Symbol
________
________
________
Mass (amu)
________
1/1840
________
Charge
________
________
________
Discuss why some elements are radioactive while most elements are not.