What is carbon dating gcse

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A block of radioactive material will contain many trillions of nuclei and not all nuclei are likely to decay at the same time so it is impossible to tell when a particular nucleus will decay. As a ratio of what was present originally compared to what was left, this would be If there are g of cobalt in a sample, how much will be left after 15 years? Why was uranium used rather than uranium? This is called the half-life. Calculate the age, in years, of the archaeological samples of bone. All living things therefore have carbon - 14 in them at the same amount which is present in the environment.

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The carbon - 14 which is formed is radioactive and decays to produce nitrogen again.

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Carbon Dating-P4

A 1 g sample of bone from an archaeological site has an average rate of decay of 5. Radioactive decay is a random process. A series of unstable isotopes is formed, all with relatively short half-lives, until a stable isotope, lead, is formed. Half life Radioactive decay is a random process. Calculate the age of the ancient boat in years. The others are not radioactive. The ratio of uranium to lead in a sample of rock indicates the age of the rock.

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