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The tendency of some elements, such as uranium, to emit radiation as a result of changes in the atomic nucleus.
A helium atom nucleus, which consists of two neutrons and two protons and is ejected by certain radioactive elements.
An electron ejected from an atomic nucleus during the radioactive decay of certain nuclei.
The force of interaction between all nucleons, effective only at very, very, very close distances.
strong nuclear force
The conversion of an atomic nucleus of one element to an atomic nucleus of another element through a loss or gain of protons
The process of estimating the age of once living material by measuring the amount of radioactive isotope of carbon present in the material.
a self-sustaining reaction in which the products of one fusion event stimulate further events
the splitting of a heavy nucleus into two lighter nuclei, accomponied by the release of much energy.
How do the electric charges of alpha, beta, and gamma rays differ from one another?
alpha is positively charged, beta is negatively charge, and gamma has electromagnetic radiation
How are the strong nuclear force and the electric force different from each other?
Nuclear force diminishes with distance but electrical force does not.
What role do neutrons play in the atomic nucleus?
Neutrons act like "nuclear cement" attracting neutrons and protons.
When thorium, atomic number 90, decays by emitting an alpha particle, what is the atomic number of the resulting nucleus?
When thorium decays by emitting a beta particle, what is the atomic number of the resulting nucleus?
What changes in atomic number occurs when a nucleus emits an alpha particle? A beta particle?
An alpha particle loses 2 protons which lowers it by 2. A beta particle changing a neutron to a proton making the atomic number go up by 1.
What is a long range fate of all the uranium that exists in the world today?
Uranium decays to lead.
How does the decay rate of an isotope relate its half-life?
The half-life is the time it takes for half the radioactive atoms to decay.
Why is there more carbon-14 in living bones than in once-living ancient bones of the same mass?
The carbon-14 is decaying.
Why is carbon-14 dating useless for dating old coins but not old pieces of cloth?
Cloth is made of plants, plants have carbon-14, metals do not
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