1. Which phrase describes radioactive decay?

the spontaneous emission of radiation
the joining of small nuclei into a larger nucleus
the splitting of a large nucleus into smaller nuclei
the triggering of one reaction by the products of another

2. Based on the nuclear symbol, how many protons are contained in the following isotope?
37 17 CI

17
20
37

3. Based on the nuclear symbol, how many neutrons are contained in the following isotope?
17 8 O

8
9
17
25

4. Which option would be an appropriate model of nuclear fusion?

adding a drop of water to a glass of water
sewing one piece of fabric to another
putting a puzzle together
mashing two marshmallows together

5. Which types of particles are involved in a fission reaction?

A neutral neutron strikes a large positive nucleus.
A positive proton strikes a large neutral nucleus.
A neutral neutron strikes a large neutral nucleus.
A positive proton strikes a large positive nucleus.

6. What best describes nuclear fusion?

There is little energy released during a nuclear fusion reaction
Nuclear fusion does not occur naturally in the universe
A nuclear fusion reaction requires an extraordinary amount of energy
"splitting an atom" is common when describing nuclear fusion

7. In which type of radioactive decay does the nucleus become more stable without changing its identity?

gamma decay
beta-plus decay
beta-minus decay
alpha decay

8. An alpha particle is equivalent to the nucleus of an atom of which element?

helium
carbon
hydrogen
nitrogen

9. Gamma radiation is used to treat certain types of tumors deep in the brain that cannot be accessed with surgery. What possible reason to explain why gamma radiation is preferred over beta decay or alpha decay for this treatment?

Gamma radiation is not harmful to human tissue
Alpha decay has greater penetrating power than gamma radiation or beta decay
When an atoms mass emits a beta particle, its mass does not change
Gamma radiation has greater penetrating power than beta or alpha decay

9 answers

Thank you, I AM having a great day; however, I'm not about to answer 10 questions when you've shown no work at all. You tell me what you think and why and I'll help. You can also pick a question and explain fully what you don't understand or why you're having trouble with it and I'll help you through it. It's just that I'm not in the freebie mood right now. Here's a freebie. #8 is helium nucleus in an alpha particle.
sounds fair. ill give an answer a bit later since I'm busy rn ty bob :)
1. Which phrase describes radioactive decay?

the spontaneous emission of radiation <
the joining of small nuclei into a larger nucleus
the splitting of a large nucleus into smaller nuclei
the triggering of one reaction by the products of another

2. Based on the nuclear symbol, how many protons are contained in the following isotope?
37 17 CI

17 <
20
37

3. Based on the nuclear symbol, how many neutrons are contained in the following isotope?
17 8 O

8
9 <
17
25

4. Which option would be an appropriate model of nuclear fusion?

adding a drop of water to a glass of water
sewing one piece of fabric to another
putting a puzzle together
mashing two marshmallows together <

5. Which types of particles are involved in a fission reaction?

A neutral neutron strikes a large positive nucleus. <
A positive proton strikes a large neutral nucleus.
A neutral neutron strikes a large neutral nucleus.
A positive proton strikes a large positive nucleus.

6. What best describes nuclear fusion?

There is little energy released during a nuclear fusion reaction
Nuclear fusion does not occur naturally in the universe
A nuclear fusion reaction requires an extraordinary amount of energy <
"splitting an atom" is common when describing nuclear fusion

7. In which type of radioactive decay does the nucleus become more stable without changing its identity?

gamma decay <
beta-plus decay
beta-minus decay
alpha decay

8. An alpha particle is equivalent to the nucleus of an atom of which element?

helium <
carbon
hydrogen
nitrogen

9. Gamma radiation is used to treat certain types of tumors deep in the brain that cannot be accessed with surgery. What possible reason to explain why gamma radiation is preferred over beta decay or alpha decay for this treatment?

Gamma radiation is not harmful to human tissue
Alpha decay has greater penetrating power than gamma radiation or beta decay <
When an atoms mass emits a beta particle, its mass does not change
Gamma radiation has greater penetrating power than beta or alpha decay
< = what i chose
:)
dr. bob i rlly need ur help on this one!! :( I just need my answers checked and corrected.
Thank you and you did great. I disagree with 5. I think a better answer is c.
For #9 d is the correct answer.
Sorry I took so long to get back to you but I had company @ noon. My visitors just left.
oh, no worries! and thank you for the help! i have some more though, do you think you can see if I did okay on those too?
I have answered all you posted above.
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