Nuclear Decay And Particles Flashcards
Alpha particle contains
2 protons and 2 neutrons
Define alpha particle
Particle emitted by radioactive source
Define Beta particle
Electron from breaking apart of neutron
Define gamma ray
High energy photon emitted by radioisotope
Define positron
Particle with mass of electron but positive charge
Positrons charge
Positive
Half life
Time needed for half of nuclei of radioisotope to decay to products
What is fission
Nucleus splits
What is fusion?
Nuclei combine
What is alpha particle made of?
2 protons and 2 neutrons forming helium nuclei
Which rays have most penetrating power?
Gamma rays
Which particles are electrons?
Beta particles
What can stop gamma rays?
Lead and concrete
What are unstable nuclei?
Radio isotopes
What radiation are gamma rays?
Electromagnetic radiation
What can stop alpha decay?
Cloth or paper
Why is nuclear fission not practiced?
Extremely high temperatures are needed
What are the fastest moving electrons?
Beta particles
Which particle has double positive charge?
Alpha particles
Which rays have no mass or atomic #?
Gamma rays
Which particle changes mass# and Tomic# in radioactive decay, is a helium nucleus?
Alpha particles
Which rays are electromagnetic radiation?
Gamma rays
When an electron gains an amount of energy where does it move from?
It moves from Ground to excited
