Nuclear Equations
This type of decay causes a reduction in mass number.
What is alpha?
This causes nuclear decay.
What is an unstable nucleus?
What isotope has a mass of 60 and an atomic number 27?
Cobalt-60
In this type of decay, a neutron changes into a proton and releases an electron.
What is beta decay?
The missing particle.
146C→ ____ + 147N
What is 0-1 e?
An atom or molecule with a positive or negative charge.
What is an ion?
Isotopes differ in the number of these subatomic particles.
What are neutrons?
After one half-life, this fraction of the original radioactive sample remains.
What is 1/2?
Which type of nuclear reaction is used in nuclear power plants?
Fission
The missing particle.
23191Pa → ____ + 22789Ac
What is 42He?
These high-energy rays are the most penetrating form of ionizing radiation.
What are gamma rays?
The number of protons in Uranium-238.
What is 92?
After two half-lives, this fraction of the original radioactive sample remains.
What is 1/4?
The difference between the sum of the masses of an atom's individual components (protons, neutrons, and electrons) and the actual measured mass of the nucleus is called:
Mass Defect
The missing isotope.
21082Pb → 42He + ____
What is 20680Hg?
This product of nuclear decay can be stopped by a sheet of paper.
What is alpha particle?
The atomic symbol includes two numbers: atomic mass and atomic number. What does the atomic mass number tell you?
The total number of protons and neutrons
How much of a 24g sample of Nitrogen-13 remains after 20 minutes if the halflife is 10 minutes?
What is 6g?
The difference between nuclear fission and nuclear fusion.
What is fission splits heavy atomic nuclei, while fusion joins light atomic nuclei?
The missing isotope.
____ → 0-1 e + 21084 Po + 00 ɣ
What is 21083 Bi?
This naturally occurring radioactive gas can accumulate in basements and is a major source of ionizing radiation exposure.
What is radon?
How many protons are in Radium-226?
88
After 4 half-lives, this percent of a radioactive substance remains.
What is 6.25%?
A tool used to detect ionizing radiation.
What is a geiger counter?