Radioactivity Flashcards
1
Q
What is it called when most atoms have a stable nucleus which doesn’t change, however some isotopes (radioisotopes) are unstable and undergo changes in the nuclei?
A
Radioactive decay
2
Q
How does radioactive decay transform radioisotopes into more stable nuclei ?
A
By releasing energy and particles , where necessary
3
Q
Where does : beta gamma and alpha travel to ?
A
Positive beta negative alpha
Straight through gamma
4
Q
What stops alpha ?
A
Paper
5
Q
What stops beta ?
A
Aluminium
6
Q
What stops gamma ?
A
Lead
7
Q
What does alpha consist of , it’s charge, mass, symbol ?
A
He nucleus 2+ 4 4 He 2
8
Q
What does beta consist of, charge, mass, symbol
A
Electron 1- ~0 0 e -1
9
Q
What is nuclear chemistry ?
A
Is about changes to the nucleus of an element
