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Part of Ch.22 Test
IPC CRAP FINAL STUDY
| Question | Answer |
|---|---|
| in alpha decay, the mass number of the atom before the decay | a. equals the sum of the mass numbers of the products |
| alpha particles are nuclei of | c. helium |
| 226/88 Ra -> 222/86 Rn + 4/2 He In this example of alpha decay, what is the mass number of radium before the decay? | a. 226 |
| Ra-> Rn + He. in this example, what are the chemical symbols of the products of the decay? | Rn and He |
| During beta decay, a nucleus | d. gains a protons and loses a neutron |
| when a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element | remains the same |
| in radioactive decay | element |
| nuclei with too many or too few neutrons are | unstable |
| the opposite reaction to fusion is called | fission |
| atoms of a particular element that have different numbers of neutrons are called: | isotopes |
| the atomic mass number for the radioisotope carbon- 13 is: | 13 |