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6. Who discovered the neutron?

  • Rutherford
  • James Chadwick
  • Thomson
  • Me

7. How is a liquid's particles described?

  • particles that can slide past each other
  • particles bouncing up and down
  • particles tightly packed but free to move past each other
  • particles packed tightly in a regular structure

8. What is a chain reaction?

  • 2 or 3 neutrons exploding out of a fission reaction and colliding with other uranium nuclei to cause further reactions
  • Chains
  • 2 or 3 neutrons exploding out of a fission reaction and colliding with other hydrogen nuclei to cause further reactions

9. How is a gas' particles described?

  • particles spread out moving randomly
  • particles bouncing in the air
  • particles flowing side-to-side
  • particles tightly packed

10. How is the rate of gas pressure measured?

  • How quickly gas fills up the container and the amount of particles filling up the container
  • The frequency of gas particles hitting their containers walls and the speed they do it at
  • The smell of the gas
  • How quickly each gas particle collides into another

11. What is the formula for density?

  • Density = Mass/Volume
  • Volume = Mass x Speed
  • Density = Mass x Volume
  • Density = Volume/Time

12. What is density?

  • How close atoms stay to each other
  • The speed of particles bouncing
  • How closely packed particles are in a solid, liquid or gas
  • The tightness of an atom

13. What is released during a fission reaction

  • Gamma radiation
  • Light
  • Alpha radiation
  • Beta radiation

14. What else is released during a fission reaction?

  • all of the above
  • Sound waves
  • Kinetic energy
  • electricity

15. What is an alpha particle made of?

  • 1 proton, 1 electron
  • 1 electron, 3 protons
  • 2 protons, 2 neutrons
  • 2 electrons, 2 protons

16. When is gas pressure caused?

  • When there is a fire
  • When gas particles hit the walls of their container
  • When gas is put in a bike
  • When gas is heated

17. How is a solid's particles described?

  • particles packed tightly in a regular structure
  • particles moving freely
  • particles tightly packed but free to move past each other
  • huh

18. What happens when the nucleus splits?

  • It explodes
  • It's electrons start vibrating rapidly
  • It creates two smaller nuclei roughly equal in size called the daughter nuclei
  • It creates three nuclei called son nuclei

19. What's the relative charge of an alpha particle?

  • -3
  • +4
  • +2
  • 4,2