Alpha
What happens during alpha decay
An alpha particle is released to stabilize the nucleus
What is released during beta decay
A beta particle (Electron)
What happens during gamma decay?
An atom goes from an excited state to an unexcited (relaxed) state.
What happens to the weight of a radioactive sample after it undergoes 1 half-life?
It gets cut in half
What radioactive particle is the weakest and penetrating objects?
Why for double points
Alpha particles
(It is large/It is a helium atom)
What makes up the alpha particle?
Helium
2 protons and 2 neutrons (Double points)
What charge does a beta particle have?
What is a gamma particle?
High energy waves.
How long does a half-life last for?
Any amount of time
It depends on the radioactive element
What radioactive particle is the strongest at penetrating objects?
Why for double points
Gamma radiation
(It is energy, energy is small)
What charge does an alpha particle have?
Positive
What happens during a beta decay
The proton goes up by one
A neutrons changes into a proton and electron (Double points)
What charge is a gamma particle?
Neutral
(Kind of a trick question. Energy can't have a charge)
(If someone can tell me why energy doesn't have a charge they get 300 more points)
If a 300 gram sample of Francium (Fr) undergoes 2 half-life, what is its new weight?
75 grams
What material (there are two acceptable answers) are commonly used to stop gamma radiation?
Lead or concreate
What element is produced after Uranium (U) (92 protons) undergoes 1 alpha decay?
Thorium (Th)
What is the daughter element after Cobalt (Co) (27 protons) undergoes 1 beta decay?
Nickel (Ni)
List 2 ways in which gamma radiation can be produced and emitted.
1. Naturally forming unstable isotopes
2. Nuclear bombs
3. Nuclear power plants
4. Lightning
5. Space (Black holes/suns)
If a 20 gram sample of Carbon - 14 has a half-life of 6000 years, and decays for 12,000 years, what would its new weight be?
5 grams
What are the 6 sections of a scientific article
Abstract, Introduction, Methods, Results, Discussion, Conclusion
What daughter isotope is formed when Lead - 210 (Pb) (82 protons) undergoes 1 alpha decay?
Mercury - 206 (Hg)
What daughter isotope is formed when Carbon - 14 (C) (6 protons) undergoes 1 beta decay?
Nitrogen - 14 (N)
What daughter isotope is formed when Uranium - 238 (U) (92 protons) undergoes only gamma decay?
Uranium - 238
If a sample of radioactive Francium - 240 has a half-life of 22 minutes, decay from a weight of 600 grams to 75 grams, how long was it decaying for?
66 minutes
1 hour and 6 minutes
What is the purpose of carbon dating and how does it work?