1. Which type of nuclear use? overline (20)=% a. fission b. fusion c. propulsion d. gamma radiation 2. All of the mass of an atom comes from the a. protons c. electrons b. neutrons d protons and neutrons 3. Which subatomic particles are contained in the nucleus? a. electrons c. protons and electrons b. protons and neutrons d. neutrons and quarks 4. Why does a nuclear reaction cause one element to turn into a different one? a. The mass changes. c. It releases a lot of energy. b. The number of protons changes d The atoms turn intolons. 5. Which statement is true? a. Nuclear reactions involve electrons being shared or transferred b. Nuclear reactions involve changes to an atom's nucleus c. Half-life measures the mass of an atom. d. Nuclear reactions just rearrange atoms; they don't change the atoms into new elements For questions 6.8 refer to the picture on the right 6. What is the best name for this isotope? a. Iron-26 b. Iron-57 c. Iron-31 d Ferris -57 7. How many protons does it have? a. 57 c. 83 b. 26 8. If I add a proton, how would it change? a. Its mass would increase c. It would be cobalt. b. It would be a different isotope of iron d. a and b e. a and c 9 Different isotopes have a different a number of protons. b. chemical symbol 10. Does a beta emission change the mass of an atom? a. Yes, it loses mass when it loses protons and neutrons b. No, electrons don't have any mass c. No, the emission is just energy that doesn't have any mass d It depends on the atom c. number of neutrons d number of electrons.