Exam 10: Radioactivity and Nuclear Processes

You inject a 160 lb male patient with 1.0 ml of a saline solution containing a radioactive form of sodium. It has an activity of 5.0 × 10⁴ dpm. After allowing sufficient time for the solution to mix, you remove a 1.0 ml sample of blood and measure its radioactivity. You discover it to have an activity of 11 dpm. What is the patient's blood volume? (Hint: this is similar to a M₁V₁ = M₂V₂ type problem.)

Which of the responses represent the missing particle in the following reaction?

What is the nuclear composition of ?

Which of the following is not a nuclear reaction?

Which of the following is a physical measurement of radioactivity?

Radioisotopes which emit alpha rays make the best diagnostic tracers.

The curie, becquerel and roentgen are all physical units of radiation.

The radioisotope radon-222 is a gas that is a health hazard because it can make its way into the house from the soil in which it is produced, be inhaled, and cause lung cancer.

There are some elements within the periodic table that do not occur in nature. One of the man-made elements is _____ .

A desirable characteristic of a radioisotope used as a tracer is that it produces a radioactive daughter.

The decay of to occurs through the emission of

What is the nature of the reactions that occur in a star?

Diagnostic tracers form cool spots when they are accumulated in diseased tissue.

How much of a fissionable material is required to have a self-sustaining reaction?

A common use of radioisotopes is to speed up chemical reactions.

5.6 mCi would be equal to _____ .

Film badges will detect only X-rays.

Uranium-235, under the proper circumstances, will undergo nuclear decay releasing 3 high speed neutrons in the process.

A rem is a biological radiation measurement which is independent of the type of radiation.

Which emissions can be detected by a film badge?