IPC Test 1/4/15 Flashcards
Who discovered radioactivity
Becquerel
From which part of the atom do radioactive emissions originate
Nucleus
What is the mass of an alpha particle
4
What’s the # of proton and # of neutrons
2 & 2
What’s the charge of an alpha particle
2+
What effect does the emission of an alpha particle have on the mass number and the atomic number of the original isotope
Mass number goes down by 4 and proton number goes down by 2
Why does alpha particle have a charge of 2+ while the helium atoms has no charge
The alpha particle has no electrons and two protons. The helium atom has 2 protons and 2 neutrons
What’s the mass of a beta particle
0
What’s the charge for a beta particle
1-
What’s the nuclear symbol for alpha decay
4/2 He
What’s the nuclear symbol for beta particle
0/-1 e
How is a beta particle formed
Neutron splits into a proton and electron. Electron is emitted proton stays
What effect does emission of an beta particle have on the mass number and atomic number
Mass number stays the same proton number goes up by one
Mass of a positron particle
0
Charge of a positron particle
1+
What is the nuclear symbol for a positron particle
0/1+ e
How is a positron formed
Proton splits into a neutron and positron; positron is emitted and neutron stays
What effect does the emission of a positron have on the mass number and the atomic number
Mass # stays the same and proton # goes down by one
Mass of gamma particle
0
