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Friday 2

QuestionAnswer
Which element is used for dating archaeological discoveries? carbon-14
Which radioactive isotope is often used as a tracer to study organic reaction mechanisms? carbon-14
Which radioactive isotope is used in geological dating? uranium-238
Which isotopic ratio needs to be determined when the age of ancient wooden objects is investigated? carbon-14 to carbon-12
A radioactive isotope used in the study of many organic reaction mechanisms is carbon-14
The radioisotope I-131 is used to diagnose thyroid disorders
Radioisotopes used for medical diagnosis must have short half-lives and be quickly eliminated by the body
A radioisotope is called a tracer when it is used to determine the way in which a chemical reaction occurs
Radiation used in the processing of food is intended to kill microorganisms that are found in food
A radioisotope which is sometimes used by doctors to pinpoint a brain tumor is (3) technetium-99
Radioisotopes used for medical diagnosis must have short half-lives and be quickly eliminated by the body
Which radioactive isotope is used in geological dating? uranium-238
Which element is used for dating archaeological discoveries? carbon-14
Which pair of isotopes can serve as fissionable nuclear fuels? U-235 and Pu-239
Which statement explains why nuclear waste materials may pose a problem? They frequently have long half-lives and remain radioactive for extended periods of time.
A radioactive-dating procedure to determine the age of a mineral compares the mineral's remaining amounts of isotope 23&U and isotope 206рb
What occurs in both fusion and fission reactions? Small amounts of matter are converted into large amounts of energy.
Which equation represents a spontaneous transmutation? any equation that contains like the stuff in table O
what is a risk of using the radioisotope Co-60 in treating cancer? increased biological exposure
An unstable nucleus spontaneously releases a positron. This is an example of radioactive decay
The stability of isotopes is related to the ratio of which particles in the atoms? neutrons and protons
Nuclei of U-238 atoms are unstable and spontaneously emit alpha particles
One beneficial use of radioisotopes is Detection of disease
Which statement describes the stability of the nuclei of potassium atoms? Some potassium atoms have unstable nuclei that spontaneously decay.
Created by: Fernando.Quezada
 

 



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