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ch. 18 Decay
ch. 18 decay
15
Chemistry
11th Grade
01/23/2014

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Term
alpha particles
Definition
made of two protons and two neutrons ,is emmited from the decay nucleus
Term
beta particles
Definition
the electron is emmitted from the nucleus
Term
bubble chamber
Definition
holds a supperheated liquid ,which doesnt boil because the pressure in the chamber is high
Term
chain reaction
Definition
the series of repeated fission reactions cause by the release of neutrons in each reaction
Term
cloud chamber
Definition
can be used to detect alpha or beta particle radiation.
Term
tracer
Definition
when a radioistope is used to find or keep track of molecules in sn organism
Term
transmutation
Definition
is the process of changing one element to another through nuclear decay
Term
critical mass
Definition
is the amount of material required so that each fission reaction produces approximately one more fission reaction
Term
gamma rays
Definition
are electromagnetic waves with the highest frequencies and the shortest wave lengths in the elector magnetic spectrum
Term
geiger counter
Definition
is a device that measures the amount of radiation by producing an electric current when it detects a charged particle
Term
half-life
Definition
amount of time it takes for half the nuclei in a sample of radioactive isotope to decay
Term
nuclear fission
Definition
the process of splitting a nucleus into several smaller nuclei
Term
nuclear fussion
Definition
two nuclei with low masses are combined to form one nucleus of larger mass
Term
radioactivity
Definition
when the strong force is not large enough to hold a nucleus together tightly, the nucleus can decay, and give off matter and energy
Term
strong force
Definition
causes protons and neutrons to be attracted to each other
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