Isotopes and Radioisotopes
The number of neutrons is equal to what?
Mass Number - Atomic Number
What type of radioactive decay doesn't affect mass or atomic number?
Gamma decay
What function is Half-Life expressed with?
Exponential Function
What is c in the e=mc2
c = speed of light
Nuclear Fusion is opposite to what?
Nuclear Fission
What are the three Hydrogen Isotopes?
Which type of radioactive decay splits out helium?
Alpha decay
What is the formula for Half-Life
A = Ai (1/2)^t/h
Explain the process of nuclear fission?
When a neutron collided with a uranium atom.
What is the definition of nuclear fusion?
Is a nuclear reaction in which the number of two atoms fuse together to form a larger nucleus.
What is a radioisotope?
An unstable version of an isotope that can constantly change its nuclear structure.
What holds all protons together in the nucleus?
Neutrons
What is the half-life of Carbon-14?
5730 years
What is the isotope that is created when a neutron merges with a uranium atom?
U-236
Proton-proton chain and Carbon-Nitrogen-Oxygen cycle.
What is average atomic mass?
the average of the mass of all the isotopes of a certain element.
What happens when a nucleus becomes unstable?
It breaks apart
What is half-life of a radioactive material?
The average time that it takes a radioactive material to decay to half of its original mass.
What are the lighter elements created in the fission process?
Helium or hydrogen
Iter means what in latin?
The way
What are the medical applications of radioisotopes?
Diagnose and treat thyroid dieasease, nuclear imaging and radio nuclei therapy.
How many ways can atoms decay?
3 ways.
Solve the following: A substance has an original mass of 100mg, with a half-life of 2 years.
What is the mass of the substance after 10 years.
3.125mg
Explain the law of conservation of mass-energy
Mass can transform into energy, and energy into mass such that the total mass-energy in an isolated system remains constant.
Why did Canada withdraw from the international nuclear fusion project?
Withdrew due to lack of funding.