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DIVE Integrated Chemistry and Physics Lesson 9
Atomic mass, atomic mass unit, atomic number, mass number, isotopes, isotopic notation, nuclear chemistry, radioactivity, alpha particle, beta particle, gamma ray, alpha decay, beta decay, radioactive dating, nuclear bombardment reaction, nuclear fission, chain reaction, theory of relativity, nuclear fusion
Terms in this set (18)
The mass of an atom, including its protons, neutrons, and electrons. It is usually expressed in atomic mass units (amu).
Atomic mass unit
The unit of measure used to express the mass of an atom, defined as one-twelfth the mass of an atom of carbon-12.
The number of protons in an atom. Each element has a unique atomic number, that stays constant, which allows it to be used to identify an atom.
The total number of protons plus neutrons of an atom.
- Elements whose atoms have the same number of protons, but different numbers of neutrons.
A method of notation used to express the identity of an atom. It lists the atomic number, and mass number.
The area of chemistry that deals with radioactivity, and reactions involving radioactive material.
When particles and rays are emitted from a nuclei.
A particle identical to a helium nucleus, composed of two protons and two neutrons bound together.
An electron or positron emitted during beta decay.
High frequency electromagnetic radiation emitted from an atom's nucleus.
The process in which an atomic nucleus decays and emits an alpha particle.
Measuring the difference between the initial amount of radioactive material and the current amount, and using the rate of decay to determine its age.
nuclear bombardment reaction
A reaction caused by the bombardment of a nucleus by atomic particles or other nuclei.
A nuclear reaction in which an atom's nucleus is split, releasing large amounts of energy.
A series of reactions that are triggered by the splitting of a nucleus. This releases neutrons, which then split other nuclei, releasing more neutrons.
theory of relativity
There is a proportional relationship between mass and energy, and when energy is released mass is lost.
A nuclear reaction in which multiple atomic nuclei are combined to form a larger one.
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