Topic 1 Nuclear Radiation
What are (a)alpha, (b)beta, and (c)gamma rays?
Topic 2 Half-Life
(a) What is the half-life of a radioactive decay process.
(b) Show how to calculate the half-life from the decay constant.
Examples
The one isotope of uranium, 235U, has a half-life of 7.1 x 108 years. Presumably, there was a bunch more of this stuff around when the earth was formed 4.5 x 109 years ago.
What fraction of it is left?
What is the decay constant of 235U?
What would be the decay rate for a one mole sample of 235U?
Textbook Problems
|
Level |
Do to hand in |
Read and do for yourself |
| A | 3, 5, 9, 11, 17 | 4, 7, 10, 13 |
| B | 3, 7, 9, 13, 19, 28 | 4, 6, 10, 14, 20, 26 |
| C | 11 | 3, 9 |