Question

1. high energy radiation emitted from the nucleus______
2. force holding the nucleus together______
3. elements changing into new elements through nuclear reactions ______
4. unstable isotope present before the decay event.______
5. helium nucleus ejected from the nucleus______
6. electron ejected from the nucleus______
7. new element created after the decay event______
8. atoms splitting into smaller atoms______
9. the moment a radioactive particle is ejected from the nucleus ______

10.time needed for half of a radioactive isotope to decay.______

a. transmutation
b. daughter isotope
c. half life
d. nuclear fission
e. gamma particle
f. strong nuclear force
g. decay event
h. alpha particle
i. beta particle
j. parent isotope

Explanation:

1. High - energy radiation from the nucleus is Gamma Particle (e). Gamma rays are high - energy electromagnetic radiation emitted from the nucleus.
2. The force holding the nucleus together is the Strong nuclear force (f). The strong nuclear force overcomes the electrostatic repulsion between protons in the nucleus.
3. Elements changing into new elements through nuclear reactions is Transmutation (a). Transmutation is the process of one element becoming another via nuclear reactions.
4. The unstable isotope before decay is Parent Isotope (j). The parent isotope is the original unstable isotope that undergoes decay.
5. Helium nucleus ejected from the nucleus is Alpha Particle (h). An alpha particle is a helium - 4 nucleus (\(^4_2\text{He}\)).
6. Electron ejected from the nucleus is Beta Particle (i). A beta particle is an electron (\(^0_{- 1}\text{e}\)) emitted from the nucleus during beta decay.
7. New element after decay is Daughter Isotope (b). The daughter isotope is the new isotope formed after the parent isotope decays.
8. Atoms splitting into smaller atoms is Nuclear fission (d). Nuclear fission is the process of a large atomic nucleus splitting into smaller nuclei.
9. The moment a radioactive particle is ejected is Decay event (g). A decay event is the occurrence of a radioactive particle being emitted from a nucleus.
10. Time for half of isotope to decay is Half Life (c). Half - life is defined as the time it takes for half of a radioactive isotope sample to decay.

Answer:

1. e. Gamma Particle
2. f. Strong nuclear force
3. a. Transmutation
4. j. Parent Isotope
5. h. Alpha Particle
6. i. Beta Particle
7. b. Daughter Isotope
8. d. Nuclear fission
9. g. Decay event
10. c. Half Life