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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?