Radioactive decay simulation | Chemistry |

background [prelab assignment (15 points) due at the beginning of lab]

describe a method using graphical analysis (of a graph of # radioactive isotopes versus time) to determine the half-life of a radioactive isotope

describe a method using graphical analysis (of a graph of ln # radioactive isotopes versus time) to determine the decay constant of a radioactive isotope

describe the Excel command / syntax for "randbetween"

purpose

use an Excel-based model to simulate radioactive isotope decay (start with 500 & end with < 50 simulated isotopes; read below content of your lab report for other aspects of the lab)

determine the half-life and decay constant; compare 6- versus 10- sided dice

materials

Microsoft Excel template

methods / data analysis

student design

Content of lab report [20 points]

data analysis- for 6- & 10- sided dice

- 2 plots on the same chart / graph for 6- & 10- sided dice; 10 points)

- figure 1: # dice versus # dice roll (use Excel's trendline --> exponential; don't include parameters of eqn & R
^{ 2})- figure 2: ln (# dice) versus # dice roll (use Excel's trendline --> linear regression feature)
- determine the half-life for each type of dice using the preceding graphs; include the basis of its value; 10 points

**resource**s

lab activity source (examples): site 1 & site 2 [access 4 / 2009]