What word is used to describe the change of one element into another

1. What word is used to describe the change of one element into another?2. What are the main sources of background radiation?3. What are transuranium elements and how are they made?4. What products result from radioactive decay of the following α emitters?190 208 245Pt Fr Cm78 87 965. Approximately how long would it take a sample of selenium-75 to lose 99% of its radioactivity if it has a half life of 120 days?6. Why are rems the preferred unit for measuring the health effects of radiation?7. A 2.0 mL solution containing 1.25 μCi/mL is injected into the blood stream of a patient.After dilution, a 1.00 mL sample is withdrawn and found to have an activity of 2.6×10-4 μCi,Calculate the total blood volume.8.What is the difference between nuclear fission and nuclear fusion?9. 140 0 248 4 Cs → ? + e Cm → ? + He 55 -1 96 210. . Describe how α radiation, β radiation, γ radiation, positron emission and electron capture differ in terms of the following. particle produced, change in atomic number, change in mass number, and penetrating power