Calculate the number of remaining atoms by subtracting ... (Example: Asking questions about how the half-life of a radioactive isotope affects its use in carbon dating.) ...

0.0625 of the original sample This could then be incorporated into other data. So, if the half-life is two days, four half-lives is 8 days. If a sample has a count rate of 3,200 Bq at the start ...

A radioactive isotope's nucleus is unstable ... Have groups exchange boxes and half-life information. Ask each team to calculate the age by comparing the ratio of the original radioactive atoms ...

The table below shows the fraction by weight of the three isotopes in any quantity of natural uranium, their half lives, and specific activity. The half life of a radioactive isotope is the time taken ...

This activity is measured in becquerels. Different radioactive isotopes have different half-lives. For example, the half-life of carbon-14 is 5,730 years, but the half-life of francium-223 is just ...