Stable & Unstable
An atom that has a net charge of 0.
What is a stable atom ?
Causes Protons and neutrons to be attracted to each other.
What is strong force?
The amount of a substance that remains after 2 half lives
What is 1/4 ?
Process of splitting a nucleus into several smaller nuclei.
What is nuclear fission?
The process during nuclear decay in which an element changes to another.
What is transmutation ?
Is phosphorus- 30/15 stable or unstable?
Stable
The ratio of neutrons to protons for a large nucleus to be considered stable?
What is 2:3 ?
The amount a substance decays after 3 half-lives
What is 7/8 ?
Two nuclei with low masses are combined to form one nucleus of larger mass.
What is nuclear fusion ?
When Uranium-238 goes through 2 alpha decays
What is Radium-230 ?
An atom that has excess internal energy, with the result that the nucleus can undergo a spontaneous change towards a more stable form.
what is a unstable atom ?
An element with the same number of protons but a different number of neutrons.
What is isotope ?
How many half-lifes has an isotope gone through if it is at 25% of its original mass.
What is 2?
What are the products of nuclear fission? (3)
What are smaller nuclei, individual neutrons, & energy ?
When Protactinium-91 goes through a beta decay and then an alpha decay
What is Thorium-89?
a chemical element (found on the Periodic Table) that has atleast one stable, naturally occurring isotope.
What is a stable element ?
Alpha particles, beta particles and/or gamma rays are given off when this type of reaction occurs.
What is radioactive decay?
The average time it takes for half the amount of a radioactive element to decay.
What is half life?
Part of the atom involved in a nuclear reaction.
What is nucleus?
The amount of time it take for half the nuclei in a sample of the isotope to decay.
What is half-life?
Instability of an atom's nucleus when forces are unbalanced; if the nucleus has an excess of internal energy.
What is an unstable element?
the property of some unstable atoms (radionuclides) to spontaneously emit nuclear radiation.
What is Radioactivity ?
How many grams of a 200 gram radioactive element will remain after 30 years, if the half-life is 10 years.
What is three half lives?
Three types of nuclear radiation.
What is an alpha, beta, and gamma?
In this decay, a neutron is split and a proton is gained in the nucleus as an electron is released.
What is beta decay ?