Nuclear decay Flashcards
What do nuclear reactions involve?
The change of a nucleus in an atom
2 types of nuclear reaction
fission and fusion
fusion
two lighter nuclei joining together and making a heavier nucleus
fission
where a nucleaus splits into two smaller nuclei
what nuclear reaction happens in stars
nuclear fusion
What does hydrgoen turn into in a star?
Hydrogen combines with a proton to form helium
what is needed in a star for nuclear reactions to happen?
High speed and large ke to overcome the replusion of two +ve charges with protons
What makes an element radioactive?
The nuclei of the atom becoming unstable
How do radioactive elements affect other elements
radioactive particles emit rays and particles which can knock off electrons in other atoms which is called ionising radiation
