Types of Radiation
This type of radiation is a helium nucleus emitted from a nucleus.
What is Alpha Radiation?
Complete this alpha decay: 92238U→ ___ + 24He.
What is 90234Th?
This material stops alpha particles easily.
What is a skin or a paper or a few centimeters of air?
This is the time it takes for half a radioactive sample to decay.
What is half-life?
This scientist discovered radioactivity using uranium and photographic plates.
Who is Antoine Henri Becquerel?
This radiation involves an electron being emitted, increasing the atomic number by 1.
What is beta radiation?
What particle is emitted here? 614C→714N+ ___.
What is −10e (beta particle)?
Beta particles are stopped by this common metal.
What is aluminum?
After one half-life, this percentage of the sample remains.
What is 50%?
Marie Curie discovered these two radioactive elements.
What are polonium and radium?
This radiation is a high-energy photon with no mass or charge.
What is gamma radiation?
Write the product of this beta decay: 90234Th→ ___ + −10e.
What is 91234Pa?
Gamma rays require this dense metal to be blocked.
What is lead?
The half-life of 88226Ra is this many years.
What is 1600 years?
This instrument clicks to detect radiation particles.
What is a Geiger-Muller counter?
Name the type of radiation that changes a neutron into a proton inside the nucleus.
What is beta radiation?
In gamma decay, like 92238U→24He+90234Th+___, what’s emitted?
What is 00γ (gamma ray)?
his property of alpha radiation makes it dangerous if inhaled or ingested.
What is high ionizing ability?
After two half-lives of Carbon-14 (5730 years each), how much of a sample remains?
What is 25%?
This application uses alpha particles in homes to detect smoke.
What are smoke detectors?
This radiation type is least penetrating but most ionizing due to its size and charge.
What is alpha radiation?
Balance this equation: 88222Ra→86218Rn+ ___.
What is 24He (alpha particle)?
Why can’t gamma radiation be stopped by thin materials?
What is because it has high penetration power and no charge?
If 88223Ra has a half-life of 12 days, how much remains after 24 days from 100g?
What is 25g?
Ernest Rutherford contributed to radioactivity by defining this key atomic structure.
What is the nucleus?