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All three isotopes have the same atomic number of 6, but have different numbers of neutrons.Carbon-14 has 2 more neutrons than carbon-12 and 1 more than carbon-13, both of which are stable.Understand how decay and half life work to enable radiometric dating.Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.The carbon-14 decays, with its half-life of 5,730 years, while the amount of carbon-12 remains constant in the sample.By looking at the ratio of carbon-12 to carbon-14 in the sample and comparing it to the ratio in a living organism, it is possible to determine the age of a formerly living thing.By extension, this experiment is a useful analogy to radioactive decay and carbon dating.
The half-life of a radioactive isotope refers to the amount of time required for half of a quantity of a radioactive isotope to decay.
Seeing this connection will help students to understand how scientists can determine the age of a sample by looking at the amount of radioactive material in the sample.
If two nuclei have different masses, but the same atomic number, those nuclei are considered to be isotopes.
Carbon-14 is radioactive and undergoes radioactive decay.
Radioactive materials contain some nuclei that are stable and other nuclei that are unstable.