Unit 4 early morning review Flashcards
What’s the shielding effect?
When valence electrons are repelled by the core electrons. This makes the attraction between valence electrons and the nucleus weaker. The valence electrons stretch out more as electrons are added to increase the radius.
Wavelength and frequency are
Inversely proportional
Energy and frequency are
Directly proportional
What is the end result of radioactivity
A stable nucleus
What is gamma radiation
Just energy and mass won’t change
What’s the product of fission
Neutrons
What’s the process for fusion
4 hydrogen fuse to make 1 helium nucleus. The product is 2 positrons and 1 helium nuclei
What does transmutation result in?
A change in the number of protons
What maintains a chemical reaction?
Neutrons
How are radioisotopes used in cancer treatment
Used to kill the fast growing cancer cells
