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8. Contrast. The energy that can be released during a nuclear fission reaction with the energy that can be released during a nuclear fission reaction.

9. Contest. Alpha particles, beta particles, and gamma rays


10. Explain. Why mass-energy equivalence is not apparent for chemical reactions


11. Think critically. Explain why high temperatures are needed for fission reactions to occur but not for fission reactions to occur

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egenriether
8) the energy released by fusion is generally 3 to 4 times larger than with fission.  Fission has very few by-products but fusion releases large amounts of radioactive particles because it starts with large nuclei.
9) Alpha particles are 2 protons and 2 neutrons all put together.  It's really the nucleus of a helium atom.  It is most dangerous if you ingest it but it can be stopped with a sheet of paper so outside the body it's not as dangerous as others and due to its size it can't get very far in the air before hitting air molecules
beta particles are high energy electrons or positrons.  They travel further due to their small size but can be stopped by a thin barrier of plastic or wood.
Gamma rays are high frequency photons (light)  They are stopped by metal plates and go through human tissue.  They are quite dangerous.
10) The mass that is lost in chemical reactions is very small. Solve E=mc² for mass and you get m=E/c².  This says the mass you lose is equal to the energy you gained divided by the speed of light squared.  c² is a VERY big number so you need a lot of energy produced to notice it.  Chemical reactions are simply too inefficient to get that much energy out.
11)You need high temperatures for fusion because you're trying to push two atoms together (to "fuse" them as the name suggests)  The electrons in one atom repel the other electrons in the other atoms.  When stripped down to only protons, you still have to overcome this repulsion (Coulomb repulsion).  High temperatures means high velocity of the particles in the plasma.  This gives them enough "oomph" to get close enough to fuse.  Once close enough to each other, the nuclear force takes over and overwhelms the Coulomb repulsion and the nuclei fuse and release energy in doing so.

Gamma rays are high frequency photons.  They  can go through human tissue and can be stopped by metal plates.

8) The energy released by nuclear fusion is  3 to 4 times higher than with fission.  

9)

Alpha particles are 2 protons and 2 neutrons all put together.  It is same as the nucleus of a helium atom.  

Beta particles are high energy electrons or positrons.  They travel farther than the alpha particles due to the small size but can be stopped by a thin barrier of plastic or wood.

Gamma rays are high frequency photons.  They  can go through human tissue and can be stopped by metal plates.

10) The mass lost in a chemical reactions is very small. E=mc² formula says the mass lost is equal to the energy gained divided by the speed of light squared.  c² is a very large number thus need a large amount of energy to notice it.  

11) High temperatures is needed for nuclear fusion because fuse two atoms together. Primarily, the electron cloud of atoms repel each other and secondly, two nucleus repel each other.

High temperature give high velocity to the atoms which increase the chances of fusion.

To know more about Nuclear Fusion,

https://brainly.com/question/12701636